R&D operations
preferred label: عملیات تحقیق و توسعه @fa
type: Concept
narrower: case studies

facts
preferred label: امور واقعی @fa
type: Concept
related: case studies

case studies
related: facts
related: research methods
broader: R&D operations
preferred label: مطالعات موردی @fa
type: Concept

research methods
preferred label: روش‌های پژوهش @fa
type: Concept
related: case studies