By Verkerk G A   Phipps A M   Carragher J F   Matthews L R   Stelwagen K   in Animal Welfare

ISSN:0962-7286|7|1|77-86

Universities Federation for Animal Welfare‎(1998)‎

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By Morrow C.J.   Kolver E.S.   Verkerk G.A.   Matthews L.R.   in General and Comparative Endocrinology

ISSN:0016-6480|126|2|229-241

Elsevier‎(2002)‎

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