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1Fertilizer guide for food grains in the tropics and subtropics Fertilizer guide for food grains in the tropics and subtropicsby De Geus, J. G.
Published c197Texto bibliotecaUBA FA -
2Fertilizer guide for tropical and subtropical farming Fertilizer guide for tropical and subtropical farmingby De Geus, J. G.
Published c196Texto bibliotecaUBA FA -
3External research report bibliotecaWUR NL
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4by de Geus, J., van Gurp, H., van Alebeek, F.A.N., Bos, M., Janmaat, L., Molendijk, L.P.G., van Rijn, P., Schaap, B.F., Visser, A., Vlaswinkel, M.E.T., van der Wal, E., Willemse, J., Zanen, M.External research report bibliotecaWUR NL