Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6811
Is Reference of Фталов анхидрид-bg#Sense
Anhydride phthalique-fr#Sense
Anidride ftalica-it#Sense
Phthalic anhydride-en#Sense
Anidrido ftálico-pt#Sense
Anidride ftalika-mt#Sense
Ftaalzuuranhydride-nl#Sense
Phthalsäureanhydrid-de#Sense