information retrieval
type: Concept
preferred label: بازیابی اطلاعات @fa
related: retrospective search services

retrospective search services
type: Concept
alternative label: SERVICIOS DE PREGUNTA RESPUESTA
broader: information services
preferred label: خدمات جستجوی گذشته‌نگر @fa
related: bibliographic services
related: information retrieval

bibliographic services
type: Concept
preferred label: خدمات کتاب‌شناختی @fa
related: retrospective search services

information services
type: Concept
narrower: retrospective search services
preferred label: خدمات اطلاعاتی @fa