By Agenäs S   Heath MF   Nixon RM   Wilkinson JM   Phillips CJC   in Animal Welfare

ISSN:0962-7286|15|2|149-160

Universities Federation for Animal Welfare‎(2006)‎

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By Neill A.C.   Nixon R.M.   Thornton S.   in European Journal of Obstetrics and Gynecology and Reproductive Biology

ISSN:0301-2115|104|2|113-115

Elsevier‎(2002)‎

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