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1by Unshelm, J. (ed.), European Association for Animal Production, Rome (Italy). Commission on Animal Management and Health eng 25017, International Congress on Applied Ethology in Farm Animals eng 1988 2 Skara (Sweden, van Putten, G. (ed.), Zeeb, K. (ed.), Ekesbo, I. (ed.)
Published 1988Texto bibliotecaFAO IT