Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/36
Is Reference of Topological group-en#Sense
Topologische Gruppe-de#Sense
Topologische groep-nl#Sense
Groupe topologique-fr#Sense
Grupo topológico-pt#Sense
Grupo topológico-es#Sense
Gruppo topologico-it#Sense