{"codelist_number":17,"code_value":"A04","description_en":"Libretto by","description_fr":"Livret de","description_es":"Libreto de","notes_en":"Writer of libretto (opera): see also A31","notes_fr":"Auteur du livret (opéra) : voir aussi A31","notes_es":"Autor del libreto de una obra lírica (Ópera, zarzuela, etc.). Ver también A31","introduced_in_issue":0,"modified_in_issue":null,"deprecated_in_issue":null}