Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6611001
Is Reference of Sudden gas emission from the floor of coal seams-en#Sense
Spontaneous floor firedamp emission-en#Sense
Floor burst-en#Sense
Dégagement soudain de grisou en provenance du mur-fr#Sense
DS-fr#Sense