Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6811001
Is Reference of Glass-reinforced plastics grp-en#Sense
Met glasvezel versterkte kunststof-nl#Sense
Glasfaserkunststoff Gfk-de#Sense
Plastique renforcé à la fibre de verre-fr#Sense