Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6611002
Is Reference of Pig iron, cast iron and spiegeleisen in pigs, blocks, lumps and similar forms-en#Sense
Fontes (y compris la fonte spiegel) brutes, en lingots, gueuses, saumons ou masses-fr#Sense