Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/52
Is Reference of Valore p H-it#Sense
Valeur p H-fr#Sense
Reaktionswert-de#Sense
P H-Wert-de#Sense
Valor del p H-es#Sense
P H value-en#Sense