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6by Hengsdijk, H., Research Inst. for Agrobiology and Soil Fertility, Wageningen (Netherlands) eng, Nieuwenhuyse, A., Bouman, B.A.M.
Published 1998Texto bibliotecaFAO IT -
7by Schipper, R.A., Jansen, H.G.P., Bouman, B.A.M., Hengsdijk, H., Nieuwenhuyse, A., Sáenz, F.
Published 1988MON bibliotecaCATIE