By De Roo A.   Schmuck G.   Perdigao V.   Thielen J.   in Physics and Chemistry of the Earth, Parts A/B/C

ISSN:1474-7065|28|33|1291-1300

Elsevier‎(2003)‎

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By Van de Perre V   Driessen B   Van Thielen J   Verbeke G   Geers R   in Animal Welfare

ISSN:0962-7286|20|4|641-649

Universities Federation for Animal Welfare‎(2011)‎

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