Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/5631005
Is Reference of Hydroculture-en#Sense
Hidreashaothrú-ga#Sense
Hydroponie passive-fr#Sense
Hydrokultur-de#Sense
Passive hydroponics-en#Sense
Hidreaponaic éighníomhach-ga#Sense