Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Ερευνητική γεώτρησις-el#Sense
Koeporaus-fi#Sense
Provborrning-sv#Sense
Prøveboring-da#Sense
Taladro de ensayo-es#Sense
Proefboring-nl#Sense
Perfuração de pesquisa-pt#Sense
Buco(foro)-it#Sense