Pyrene
preferred label: پیرن @fa
type: Concept
broader: polycyclic aromatic hydrocarbons

anthracene
preferred label: آنتراسین @fa
type: Concept
broader: polycyclic aromatic hydrocarbons

polycyclic aromatic hydrocarbons
narrower: anthracene
narrower: phenanthrene
narrower: naphthalene
narrower: Pyrene
broader: aromatic hydrocarbons
preferred label: هیدروکربن‌های چندحلقه‌ای آروماتیک @fa
type: Concept

phenanthrene
preferred label: فنانترن @fa
type: Concept
broader: polycyclic aromatic hydrocarbons

naphthalene
preferred label: نفتالین @fa
type: Concept
broader: polycyclic aromatic hydrocarbons

aromatic hydrocarbons
preferred label: هیدروکربن‌های آروماتیک @fa
type: Concept
narrower: polycyclic aromatic hydrocarbons