Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Polyhydroxyboterzuur-nl#Sense
Polyhydroxybutyrate-en#Sense
PHB-en#Sense
Poly-en#Sense
Biopol-en#Sense
PHB-fr#Sense
Poly-hydroxybutyrate-fr#Sense