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21by Cristovao, A. (Tras-os-Montes and Alto Douro Univ., Vila Real (Portugal)), FAO, Rome (Italy). Research, Extension and Training Div. eng, Koehnen, T., Portela, J., Swanson, B.E. (ed.), Bentz, R.P. (ed.), Sofranko, A.J. (ed.)
Published 1997Texto bibliotecaFAO IT