The behaviour of sheep : biological principles and implications for production
J.J. Lynch, G.N. Hinch, D.B. Adams.
Wallingford ; East Melbourne, Aust : CAB International : CSIRO, ©1992.
x, 237 págs. : ilustraciones ; 23 cm.
ISBN: 0851987877 (CABI), 0643053298 (CSIRO)