By Graham L   Wells DL   Hepper PG   in Animal Welfare

ISSN:0962-7286|14|2|143-148

Universities Federation for Animal Welfare‎(2005)‎

Access to resources Favorite 12.812509

By Wells D.L.   Hepper P.G.   in Applied Animal Behaviour Science

ISSN:0168-1591|84|4|297-305

Elsevier‎(2003)‎

Access to resources Favorite 3.0358462