Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/52
Is Reference of Αποστραγγιστικοί υπεδάφιοι τάφροι-el#Sense
Grøft i bund-da#Sense
Zanja de descarga profunda-es#Sense
Sloot van de stortplaatsbodem-nl#Sense
Scavo del fondo deposito-it#Sense
Graben-de#Sense
Tranchée du radier de décharge-fr#Sense
Tip bottom drainage trench-en#Sense