Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/12
Is Reference of IPI-en#Sense
IOI-nl#Sense
Internationaal Octrooi Instituut-nl#Sense
IIB-it#Sense
Istituto internazionale dei brevetti-it#Sense
Institut International des Brevets-fr#Sense
IIB-fr#Sense
International Patent Institute-en#Sense