voluntary R&D centres
preferred label: مراکز داوطلبانه تحقیق و توسعه @fa
type: Concept
related: voluntary work

motivations
preferred label: انگیزش‌ها @fa
type: Concept
related: voluntary work

hobbies
preferred label: سرگرمی‌ها @fa
type: Concept
related: voluntary work

occupations
preferred label: شغل‌ها @fa
type: Concept
narrower: voluntary work

cooperative relations
preferred label: روابط همیارانه @fa
type: Concept
related: voluntary work

voluntary work
related: cooperative relations
related: voluntary R&D centres
related: motivations
related: hobbies
broader: occupations
preferred label: کار اختیاری @fa
type: Concept