By Silversides F.G.   Purdy P.H.   Blackburn H.D.   in British Poultry Science

ISSN:1466-1799|53|5|599-607

Taylor & Francis Ltd‎(2012)‎

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By Crenshaw C.C.   Martin L.M.   Mains C.R.   Wright R.D.   Dart M.G.   Perkins R.M.   Purdy P.H.   Ericsson S.A.   in Theriogenology

ISSN:0093-691X|54|1|69-74

Elsevier‎(2000)‎

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