Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Enquête de référence-fr#Sense
Levantamento de base-pt#Sense
Grundlagenerhebung-de#Sense
Baseline survey-en#Sense
Peruskartoitus-fi#Sense
Vergelijkende studie-nl#Sense