User:Gerhard Elsner, CC BY-SA 3.0 <http://creativecommons.org/licenses/by-sa/3.0/>;, via Wikimedia Commons
eTivity 2: Haltungsformen
Melkstand
User:Gerhard Elsner, CC BY-SA 3.0 <http://creativecommons.org/licenses/by-sa/3.0/>;, via Wikimedia Commons