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3Quantitative land evaluation for agro-ecological characterization Quantitative land evaluation for agro-ecological characterizationby Van Keulen, H., Workshop on Agro-Ecological Characterization, Classification and Mapping eng 14-18 Apr 1986 Rome (Italy), Berkhout, J.A.A., Van Diepen, C.A., Van Heemst, H.D.J., Janssen, B.H., Bunting, A.H. (ed.)
Published 1987Texto bibliotecaFAO IT