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ISSN:0962-7286|9|2|153-165

Universities Federation for Animal Welfare‎(2000)‎

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By Leyendecker M.   Hamann H.   Hartung J.   Kamphues J.   Neumann U.   Sürie C.   Distl O.   in British Poultry Science

ISSN:1466-1799|46|5|536-544

Taylor & Francis Ltd‎(2005)‎

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