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1by Findlay, J.B.R., FAO, Rome (Italy). Agricultural Services Div. eng, International Workshop on Conservation Tillage for Sustainable Agriculture eng 22-27 Jun 1998 Harare (Zimbabwe), Haag, W.L., Boa-Amponsem, K., Descous, M., Rass, G., Modestus, W., Benites, J. (ed.), Chuma, E. (ed.), Fowler, R. (ed.), Kienzle, J. (ed.), Molapong, K. (ed.), Manu, J. (ed.), Nyagumbo, I. (ed.), Steiner, K. (ed.), van Veenhuizen, R. (ed.), Deutsche Gesellschaft fuer Technische Zusammenarbeit, Eschborn (Germany) oth
Published 1998Texto bibliotecaFAO IT