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ISSN:0302-2838|44|6|714-719

Elsevier‎(2003)‎

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By Beckers G.J.L.   Ten Cate C.   in Animal Behaviour

ISSN:0003-3472|62|3|511-518

Elsevier‎(2001)‎

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By Beckers G.J.L.   Bolhuis J.J.   in Animal Behaviour

ISSN:0003-3472|60|5|703-704

Elsevier‎(2000)‎

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