By Sluyter F   Van Oortmerssen G A   in Animal Welfare

ISSN:0962-7286|9|2|193-205

Universities Federation for Animal Welfare‎(2000)‎

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By Zweep A.   VAN OORTMERSSEN G.A.   in Netherlands Journal of Zoology

ISSN:1568-542X|31|2|373-380

Brill‎(1980)‎

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By Koolhaas J.M.   Van Oortmerssen G.A.   in Netherlands Journal of Zoology

ISSN:1568-542X|38|2-4|111-122

Brill‎(1987)‎

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By Van Oortmerssen G.A.   Benus I.   Dijk D.J.   in Netherlands Journal of Zoology

ISSN:1568-542X|35|1-2|155-169

Brill‎(1984)‎

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