Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Salpêtre du Pérou-fr#Sense
Nitro del Perù-it#Sense
Nitrato del Perú-es#Sense
Perusalpeter-de#Sense
Νίτρο του Περού-el#Sense
Perusalpeter-da#Sense
Peru salpetre-en#Sense
Salitre do Peru-pt#Sense
Salitre do Chile-pt#Sense