Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/2831002
Is Reference of Projektionslinse-de#Sense
Projection lens-en#Sense
Lente di proiezione-it#Sense
Projektionslinse-da#Sense
Projectie-objectief-nl#Sense
Φακός προβολής-el#Sense
Lente de projeção -pt#Sense
Lentille de projection-fr#Sense
Lente de proyección-es#Sense