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2by Riekert, H.C., Department of Planning, Pretoria (South Africa) eng, Page, M., Huisman, L.I.
Published 1971Texto bibliotecaFAO IT -
3by Burt, R.L., Edye, L.A., Williams, W.T., Gillard, P., Grof, Bela, Page, M., Shaw, N.H., Williams, R.J., Wilson, G.P.M.
Published 1974Journal Article bibliotecaCGIAR -
4by Talibudeen, O., FAO, Rome (Italy). Land and Water Development Div. eng, Expert Consultation on Better Exploitation of Plant Nutrients eng 18 Apr 1977 Rome (Italy), Page, M.B.
Published 1978Texto bibliotecaFAO IT