1 résultat(s) pour 'reference services'
Reference services (en)
خدمات مرجعية (ar), Servicio de referencia (es), Service de référence (fr), Справочные услуги (ru)
Information systems
Clearing houses, Information/library cooperation, Information retrieval, Information services, Libraries, Reference materials
Information and communication
> Documentary information systems
خدمات مرجعية (ar), Servicio de referencia (es), Service de référence (fr), Справочные услуги (ru)
http://vocabularies.unesco.org/thesaurus/concept5420