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1by Van der Valk, H.C.H.G., FAO, Rome (Italy). Div. de la Production Vegetale et de la Protection des Plantes fre, Everts, J.W. (ed.)
Published 1990Texto bibliotecaFAO IT -
2by Mullie, W.C., FAO, Rome (Italy). Plant Production and Protection Div. eng, Andreasen, J., Abiola, F.A., Diatta, F., Van der Valk, H.C.H.G., Ministry of Agriculture, Dakar (Senegal). Crop Protection Directorate eng
Published 1997Texto bibliotecaFAO IT