Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6611002
Is Reference of Piedra pómez, esmeril, corindón natural y otros abrasivos naturales-es#Sense
Bimsstein, Schmirgel, natürlicher Koround und andere natürliche Schleifstoffe-de#Sense
Pumice stone, emery, natural corundum and other natural abrasives-en#Sense
Pierre ponce, émeri, corindon naturel et autres abrasifs naturels-fr#Sense