27 — Subject scheme identifier

133 codes · Introduced in Issue 0

Code Description History
01 Dewey
Dewey Decimal Classification 		+0
02 Abridged Dewey +0
03 LC classification
US Library of Congress classification 		+0
04 LC subject heading
US Library of Congress subject heading 		+0
05 NLM classification
US National Library of Medicine medical classification 		+9
06 MeSH heading
US National Library of Medicine Medical subject heading 		+9
07 NAL subject heading
US National Agricultural Library subject heading 		+9
08 AAT
Getty Art and Architecture Thesaurus heading 		+9
09 UDC
Universal Decimal Classification 		+0
10 BISAC Subject Heading modified
BISAC Subject Headings are used in the North American market to categorize books based on topical content. They serve as a guideline for shelving books in physical stores and browsing books in online stores. See https://www.bisg.org/complete-bisac-subject-headings-list 		+0 · ✎60
11 BISAC Regional theme
A geographical qualifier used with a BISAC subject category 		+5
12 BIC subject category deprecated
Deprecated. The BIC subject category scheme is obsolete, see https://bic.org.uk/resources/BIC-Standard-Subject-Categories/ 		+0 · ✎69 · ✗69
13 BIC geographical qualifier deprecated
Deprecated 		+0 · ✎69 · ✗69
14 BIC language qualifier (language as subject) deprecated
Deprecated 		+0 · ✎69 · ✗69
15 BIC time period qualifier deprecated
Deprecated 		+0 · ✎69 · ✗69
16 BIC educational purpose qualifier deprecated
Deprecated 		+0 · ✎69 · ✗69
17 BIC reading level and special interest qualifier deprecated
Deprecated 		+6 · ✎69 · ✗69
18 DDC-Sachgruppen der Deutschen Nationalbibliografie modified
Used for German National Bibliography since 2004 (100 subjects). Is different from value 30. See https://www.dnb.de/SharedDocs/Downloads/DE/Professionell/Erschliessen/ddcSachgruppenDNBAb2013.html (in German) 		+9 · ✎69
19 LC fiction genre heading +0
20 Keywords modified
For indexing and search purposes, not normally intended for display. Where multiple keywords or keyword phrases are sent, this should be in a single instance of the <SubjectHeadingText> element, and it is recommended that they should be separated by semi-colons (this is consistent with Library of Congress preferred practice) 		+0 · ✎34
21 BIC children’s book marketing category modified
See PA/BIC CBMC guidelines at https://bic.org.uk/resources/childrens-books-marketing-classifications/ 		+0 · ✎61
22 BISAC Merchandising Theme
BISAC Merchandising Themes are used in addition to BISAC Subject Headings to denote an audience to which a work may be of particular appeal, a time of year or event for which a work may be especially appropriate, or to further describe fictional works that have been subject-coded by genre 		+0
23 Publisher’s own category code modified
Which is not in itself a subject scheme, but describes other attributes of the content, as specified in <SubjectSchemeName> 		+0 · ✎68
24 Proprietary subject scheme modified
For example, a publisher’s or retailer’s own subject coding scheme. Note that a distinctive <SubjectSchemeName> is required with proprietary coding schemes 		+0 · ✎70
25 Tabla de materias ISBN
Latin America 		+0
26 Warengruppen-Systematik des deutschen Buchhandels modified
See https://vlb.de/assets/images/wgsneuversion2_0.pdf (in German) 		+0 · ✎28
27 SWD deprecated
Schlagwortnormdatei – Subject Headings Authority File in the German-speaking countries. See http://www.dnb.de/standardisierung/normdateien/swd.htm (in German) and http://www.dnb.de/eng/standardisierung/normdateien/swd.htm (English). Deprecated in favor of the GND 		+0 · ✎18 · ✗18
28 Thèmes Electre
Subject classification used by Electre (France) 		+0
29 CLIL Classification thématique modified
France. A four-digit number, see https://clil.centprod.com/listeActive.html (in French) 		+0 · ✎53
30 DNB-Sachgruppen modified
Deutsche Bibliothek subject groups. Used for German National Bibliography until 2003 (65 subjects). Is different from value 18. See http://www.dnb.de/service/pdf/ddc_wv_alt_neu.pdf (in German) 		+1 · ✎9
31 NUGI
Nederlandse Uniforme Genre-Indeling (former Dutch book trade classification) 		+1
32 NUR
Nederlandstalige Uniforme Rubrieksindeling (Dutch book trade classification, from 2002), see http://www.boek.nl/nur (in Dutch) 		+1
33 ECPA Christian Book Category deprecated
Former ECPA Christian Product Category Book Codes, consisting of up to three x 3-letter blocks, for Super Category, Primary Category and Sub-Category, previously at http://www.ecpa.org/ECPA/cbacategories.xls. No longer maintained by the ECPA. Deprecated 		+1 · ✎60 · ✗60
34 SISO
Schema Indeling Systematische Catalogus Openbare Bibliotheken (Dutch library classification) 		+1
35 Korean Decimal Classification (KDC)
A modified Dewey Decimal Classification used in the Republic of Korea 		+1
36 DDC Deutsch 22 modified
German Translation of Dewey Decimal Classification 22. Also known as DDC 22 ger. See http://www.ddc-deutsch.de/produkte/uebersichten/ 		+2 · ✎9
37 Bokgrupper modified
Norwegian book trade product categories (Bokgrupper) administered by the Norwegian Publishers Association (http://www.forleggerforeningen.no/) 		+5 · ✎28
38 Varegrupper modified
Norwegian bookselling subject categories (Bokhandelens varegrupper) administered by the Norwegian Booksellers Association (http://bokhandlerforeningen.no/) 		+5 · ✎28
39 Læreplaner-KL06 deprecated
Norwegian school curriculum version. Deprecated 		+6 · ✎53 · ✗28
40 Nippon Decimal Classification
Japanese subject classification scheme 		+5
41 BSQ
BookSelling Qualifier: Russian book trade classification 		+5
42 ANELE Materias
Spain: subject coding scheme of the Asociación Nacional de Editores de Libros y Material de Enseñanza 		+5
43 Utdanningsprogram modified
Codes for Norwegian ‘utdanningsprogram’ used in secondary education. See: http://www.udir.no/. (Formerly labelled ‘Skolefag’) 		+6 · ✎28
44 Programområde modified
Codes for Norwegian ‘programområde’ used in secondary education. See http://www.udir.no/. (Formerly labelled ‘Videregående’ or ‘Programfag’) 		+6 · ✎32
45 Undervisningsmateriell
Norwegian list of categories for books and other material used in education 		+6
46 Norsk DDK
Norwegian version of Dewey Decimal Classification 		+6
47 Varugrupper
Swedish bookselling subject categories 		+7
48 SAB
Swedish classification scheme 		+7
49 Läromedelstyp modified
Swedish bookselling educational subject type 		+7 · ✎28
50 Förhandsbeskrivning
Swedish publishers preliminary subject classification 		+7
51 Spanish ISBN UDC subset
Controlled subset of UDC codes used by the Spanish ISBN Agency 		+7
52 ECI subject categories
Subject categories defined by El Corte Inglés and used widely in the Spanish book trade 		+7
53 Soggetto CCE
Classificazione commerciale editoriale (Italian book trade subject category based on BIC). CCE documentation available at https://www.ie-online.it/CCE2_2.0.pdf 		+7
54 Qualificatore geografico CCE
CCE Geographical qualifier 		+7
55 Qualificatore di lingua CCE
CCE Language qualifier 		+7
56 Qualificatore di periodo storico CCE
CCE Time Period qualifier 		+7
57 Qualificatore di livello scolastico CCE
CCE Educational Purpose qualifier 		+7
58 Qualificatore di età di lettura CCE
CCE Reading Level Qualifier 		+7
59 VdS Bildungsmedien Fächer deprecated
Subject code list of the German association of educational media publishers, formerly at http://www.bildungsmedien.de/service/onixlisten/unterrichtsfach_onix_codelist27_value59_0408.pdf. Deprecated – use Thema subject category (eg YPA – Educational: Arts, general) instead, and add a Thema language qualifier (eg 2ACB – English) for language teaching 		+7 · ✎60 · ✗59
60 Fagkoder modified
Norwegian primary and secondary school subject categories (fagkoder), see http://www.udir.no/ 		+7 · ✎28
61 JEL classification
Journal of Economic Literature classification scheme 		+7
62 CSH
National Library of Canada subject heading (English) 		+9
63 RVM modified
Répertoire de vedettes-matière Bibliothèque de l’Université Laval) (French) 		+9 · ✎34
64 YSA deprecated
Finnish General Thesaurus (Finnish: Yleinen suomalainen asiasanasto). See https://finto.fi/ysa/fi/ (in Finnish). Deprecated. No longer updated, and replaced by YSO (see code 71) 		+8 · ✎58 · ✗58
65 Allärs deprecated
Swedish translation of the Finnish General Thesaurus (Swedish: Allmän tesaurus på svenska). See https://finto.fi/allars/sv/ (in Swedish). Deprecated. No longer updated, and replaced by YSO (see code 71) 		+8 · ✎58 · ✗58
66 YKL modified
Finnish Public Libraries Classification System (Finnish: Yleisten kirjastojen luokitusjärjestelmä). See https://finto.fi/ykl/fi/ (in Finnish), https://finto.fi/ykl/sv/ (in Swedish), https://finto.fi/ykl/en/ (in English) 		+8 · ✎58
67 MUSA deprecated
Finnish Music Thesaurus (Finnish: Musiikin asiasanasto). See https://finto.fi/musa/fi/ (in Finnish). Deprecated, and replaced by YSO (see code 71) 		+8 · ✎58 · ✗58
68 CILLA deprecated
Swedish translation of the Finnish Music Thesaurus (Swedish: Specialtesaurus för musik). See https://finto.fi/musa/sv/ (in Swedish). Deprecated, and replaced by YSO (see code 71) 		+8 · ✎58 · ✗58
69 Kaunokki deprecated
Finnish thesaurus for fiction (Finnish: Fiktiivisen aineiston asiasanasto). See https://finto.fi/kaunokki/fi/ (in Finnish). Deprecated. No longer updated, and replaced by Kauno and SLM (see codes D0 and D1) 		+8 · ✎58 · ✗58
70 Bella deprecated
Swedish translation of the Finnish thesaurus for fiction (Swedish: Specialtesaurus för fiktivt material:). See https://finto.fi/kaunokki/sv/ (in Swedish). Deprecated. No longer updated, and replaced by Kauno and SLM (see codes D0 and D1) 		+8 · ✎58 · ✗58
71 YSO modified
General Finnish Ontology (Finnish: Yleinen suomalainen ontologia). See https://finto.fi/yso/fi/ (in Finnish), https://finto.fi/yso/sv/ (in Swedish), https://finto.fi/yso/en/ (in English) 		+8 · ✎58
72 PTO modified
Finnish Geospatial Domain Ontology (Finnish: Paikkatieto ontologia). See https://finto.fi/pto/fi/ (in Finnish), https://finto.fi/pto/sv/ (in Swedish), https://finto.fi/pto/en/ (in English) 		+8 · ✎58
73 Suomalainen kirja-alan luokitus
Finnish book trade categorization 		+8
74 Sears
Sears List of Subject Headings 		+9
75 BIC E4L deprecated
BIC E4Libraries Category Headings, formerly at http://www.bic.org.uk/51/E4libraries-Subject-Category-Headings/ but replaced by UK Standard Library Categories (code 92). Deprecated 		+9 · ✎61 · ✗61
76 CSR
Code Sujet Rayon: subject categories used by bookstores in France 		+11
77 Suomalainen oppiaineluokitus modified
Finnish school subject categories. See https://www.onixkeskus.fi/media/f/5722 		+11 · ✎60
78 Japanese book trade C-Code modified
See https://isbn.jpo.or.jp/doc/08.pdf#page=44 (in Japanese) 		+12 · ✎54
79 Japanese book trade Genre Code +12
80 Fiktiivisen aineiston lisäluokitus modified
Finnish fiction genre classification. See https://finto.fi/ykl/fi/page/fiktioluokka (in Finnish), https://finto.fi/ykl/sv/page/fiktioluokka (in Swedish), https://finto.fi/ykl/en/page/fiktioluokka (in English) 		+13 · ✎58
81 Arabic Subject heading scheme +13
82 Arabized BIC subject category
Arabized version of BIC subject category scheme developed by ElKotob.com 		+13
83 Arabized LC subject headings
Arabized version of Library of Congress scheme 		+13
84 Bibliotheca Alexandrina Subject Headings
Classification scheme used by Library of Alexandria 		+13
85 Postal code
Location defined by postal code. Format is two-letter country code (from List 91), space, postal code. Note some postal codes themselves contain spaces, eg ‘GB N7 9DP’ or ‘US 10125’ 		+14
86 GeoNames ID
ID number for geographical place, as defined at http://www.geonames.org (eg 2825297 is Stuttgart, Germany, see http://www.geonames.org/2825297) 		+14
87 NewBooks Subject Classification
Used for classification of academic and specialist publication in German-speaking countries. See http://www.newbooks-services.com/de/top/unternehmensportrait/klassifikation-und-mapping.html (German) and http://www.newbooks-services.com/en/top/about-newbooks/classification-mapping.html (English) 		+14
88 Chinese Library Classification
Subject classification maintained by the Editorial Board of Chinese Library Classification. See http://cct.nlc.gov.cn for access to details of the scheme 		+15
89 NTCPDSAC Classification
Subject classification for Books, Audiovisual products and E-publications formulated by China National Technical Committee 505 		+15
90 Season and Event Indicator
German code scheme indicating association with seasons, holidays, events (eg Autumn, Back to School, Easter) 		+18
91 GND modified
(de: Gemeinsame Normdatei) Integrated Authority File used in the German-speaking countries. See https://www.dnb.de/DE/Professionell/Standardisierung/GND/gnd_node.html (German) and https://www.dnb.de/EN/Professionell/Standardisierung/GND/gnd_node.html (English). Combines the PND, SWD and GKD into a single authority file, and should be used in preference to the older codes 		+18 · ✎66
92 BIC UKSLC modified
UK Standard Library Categories, the successor to BIC’s E4L classification scheme. See https://bic.org.uk/resources/uk-standard-library-categories/ 		+19 · ✎61
93 Thema subject category
International multilingual subject category scheme – see https://ns.editeur.org/thema 		+20
94 Thema place qualifier modified +20 · ✎42
95 Thema language qualifier +20
96 Thema time period qualifier +20
97 Thema educational purpose qualifier +20
98 Thema interest age / special interest qualifier modified +20 · ✎21
99 Thema style qualifier +21
A2 Ämnesord
Swedish subject categories maintained by Bokrondellen 		+22
A3 Statystyka Książek Papierowych, Mówionych I Elektronicznych
Polish Statistical Book and E-book Classification 		+23
A4 CCSS
Common Core State Standards curriculum alignment, for links to US educational standards. <SubjectCode> uses the full dot notation. See http://www.corestandards.org/developers-and-publishers 		+26
A5 Rameau modified
French library subject headings 		+24 · ✎34
A6 Nomenclature discipline scolaire modified
French educational subject classification, URI http://data.education.fr/voc/scolomfr/scolomfr-voc-015GTPX 		+24 · ✎48
A7 ISIC
International Standard Industry Classification, a classification of economic activities. Use for books that are about a particular industry or economic activity. <SubjectCode> should be a single letter denoting an ISIC section OR a 2-, 3- or 4-digit number denoting an ISIC division, group or class. See http://unstats.un.org/unsd/cr/registry/isic-4.asp 		+26
A8 LC Children’s Subject Headings
Library of Congress Children’s Subject Headings: LCSHAC supplementary headings for Children’s books 		+28
A9 Ny Läromedel
Swedish bookselling educational subject 		+28
B0 EuroVoc
EuroVoc multilingual thesaurus. <SubjectCode> should be a EuroVoc concept dc:identifier (for example, 2777, ‘refrigerated products’). See http://eurovoc.europa.eu 		+29
B1 BISG Educational Taxonomy modified
Controlled vocabulary for educational objectives. See https://www.bisg.org/products/recommendations-for-citing-educational-standards-and-objectives-in-metadata 		+29 · ✎60
B2 Keywords (not for display) modified
For indexing and search purposes, MUST not be displayed. Where multiple keywords or keyword phrases are sent, this should be in a single instance of the <SubjectHeadingText> element, and it is recommended that they should be separated by semi-colons. Use of code B2 should be very rare: use B2 in preference to code 20 only where it is important to show the keyword list is specifically NOT for display to purchasers (eg some keywords for a medical textbook may appear offensive if displayed out of context) 		+33 · ✎34
B3 Nomenclature Diplôme modified
French higher and vocational educational subject classification, URI http://data.education.fr/voc/scolomfr/scolomfr-voc-029 		+34 · ✎48
B4 Key character names modified
For fiction and non-fiction, one or more key names, provided – like keywords – for indexing and search purposes. Where multiple character names are sent, this should be in a single instance of <SubjectHeadingText>, and multiple names should be separated by semi-colons. Note <NameAsSubject> should be used for people who are the central subject of the book. Code B4 may be used for names of lesser importance 		+35 · ✎42
B5 Key place names
For fiction and non-fiction, one or more key names, provided – like keywords – for indexing and search purposes. Where multiple place names are sent, this should in a single instance of <SubjectHeadingText>, and multiple names should be separated by semi-colons. Only for use in ONIX 3.0 or later 		+42
B6 FAST modified
Faceted Application of Subject Terminology, OCLC subject scheme derived from LCSH (see code 04). See https://fast.oclc.org/fast/. Codes are up to 8 digits, for example 1726640 for Historical fiction (see https://id.worldcat.org/fast/1726640). Only for use in ONIX 3.0 or later 		+47 · ✎66
B7 NGSS
Next Generation Science Standards for K-12 education in the USA (https://www.nextgenscience.org). <SubjectCode> is a code such as 4-PS3-2. Only for use in ONIX 3.0 or later 		+48
B8 MVB-Lesemotive
MVB classification of ‘reading rationales’, which classify unconscious motives that lead to a book purchase. Categories are assigned and maintained by MVB. Only for use in ONIX 3.0 or later. See https://vlb.de/lesemotive 		+52
B9 LOPS21 Subject module
Finnish Suomalainen oppiaineluokitus. Only for use in ONIX 3.0 or later 		+52
C0 Læreplaner-LK20
Codes for Norwegian curriculum for primary and secondary education. Only for use in ONIX 3.0 or later. See Læreplaner-LK20 at https://www.udir.no/om-udir/data/kl06-grep/ 		+53
C1 Kompetansemål-LK20
Codes for competency aims in the Norwegian curriculum for primary and secondary education. Only for use in ONIX 3.0 or later. See Kompetansemål-LK20 at https://www.udir.no/om-udir/data/kl06-grep/ 		+53
C2 Kompetansemålsett-LK20
Codes for sets of competency aims in the Norwegian curriculum for primary and secondary education. Only for use in ONIX 3.0 or later. See Kompetansemålsett-LK20 at https://www.udir.no/om-udir/data/kl06-grep/ 		+53
C3 Tverrfaglige temaer-LK20
Codes for interdisciplinary topics in the Norwegian curriculum for primary and secondary education. Only for use in ONIX 3.0 or later. See Tverrfaglige temaer-LK20 at https://www.udir.no/om-udir/data/kl06-grep/ 		+53
C4 CLIL – Type d’article scolaire
Only for use in ONIX 3.0 or later 		+53
C5 GAR – Type pédagogique
Gestionnaire d’Accès aux resources – see https://gar.education.fr/ Only for use in ONIX 3.0 or later 		+53
C6 ISCED-F
UNESCO ISCED Fields of education and training (2013), eg <SubjectCode> 0222 is ‘History and archaeology’. Only for use in ONIX 3.0 or later. See http://uis.unesco.org/sites/default/files/documents/international-standard-classification-of-education-fields-of-education-and-training-2013-detailed-field-descriptions-2015-en.pdf 		+55
C7 Klassifikationen von Spielen, Puzzles und Spielwaren
German category scheme for games, puzzles and toys. Only for use in ONIX 3.0 or later. See https://www.ludologie.de/fileadmin/user_upload/PDFs/211126_Kategorisierung_von_Spielen_Puzzles_und_Spielwaren.pdf 		+56
C8 NBVok NTSF modified
National Library of Norway genre and form thesaurus. Only for use in ONIX 3.0 or later. See https://www.nb.no/nbvok/ntsf 		+57 · ✎59
C9 JPRO Genre
Subject / genre code used in Japan. Only for use in ONIX 3.0 or later 		+58
D0 KAUNO
Finnish Ontology for fiction (Finnish: Fiktiivisen aineiston ontologia). See https://finto.fi/kauno/fi/ (in Finnish), https://finto.fi/kauno/sv/ (in Swedish), https://finto.fi/kauno/en/ (in English). Only for use in ONIX 3.0 or later 		+58
D1 SLM
Finnish genre and form vocabulary (Finnish: Suomalainen lajityyppi ja muotosanasto). See https://finto.fi/slm/fi/ (in Finnish), https://finto.fi/slm/sv/ (in Swedish), https://finto.fi/slm/en/ (in English). Only for use in ONIX 3.0 or later 		+58
D2 YSO-places
General Finnish Ontology for Places (Finnish: Yleinen suomalainen ontologia – paikat). See https://finto.fi/yso-paikat/fi/ (in Finnish), https://finto.fi/yso-paikat/sv/ (in Swedish), https://finto.fi/yso-paikat/en/ (in English). Only for use in ONIX 3.0 or later 		+58
D3 Norske emneord
See https://www.nb.no/nbvok/nb/. Only for use in ONIX 3.0 or later 		+69
D4 Austlang
Controlled vocabulary and alphanumeric codes for Aboriginal and Torres Strait Islander languages and peoples, maintained by the Australian Institute of Aboriginal and Torres Strait Islander Studies (AIATSIS), for use where the book is about a language or the people that traditionally speak it. Only for use in ONIX 3.0 or later. See https://collection.aiatsis.gov.au/austlang 		+70
D5 German Tropes list modified
Used for tropes (recurring themes, motifs, patterns of behavior and/or character traits of the main character(s) that run through a work) in German-speaking countries. Only for use in ONIX 3.0 or later. See https://www.boersenverein.de/interessengruppen/ig-produktmetadaten/best-practices/ 		+71 · ✎72