By Walker MD   Duggan G   Roulston N   Van Slack A   Mason G   in Animal Welfare

ISSN:0962-7286|21|4|497-509

Universities Federation for Animal Welfare‎(2012)‎

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By Walker M.D.   in PharmacoEconomics

ISSN:1170-7690|14|5|499-530

Adis International‎(1998)‎

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By Burns D.M.   Ruddock M.W.   Walker M.D.   Allen J.M.   Kennovin G.D.   Hirst D.G.   in European Journal of Pharmacology

ISSN:0014-2999|374|2|213-220

Elsevier‎(1999)‎

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