Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6811
Is Reference of Ácido nítrico-pt#Sense
Acide nitrique-fr#Sense
Nitric acid-en#Sense
Salpeterzuur-nl#Sense
Typpihappo-fi#Sense
Salpetersyre-da#Sense