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by Hurni, Hans.; International Soil Conservation Organization.; Geographica Bernensia.; World Association of Soil and Water Conservation.; International Soil Conservation Conference (6th : 1989 : Ethiopia and Kenya) more...
Year: c1992., Callno: 631.459:631.61 INT
Book
by International Soil Conservation Organization Conference (7th : 1992 : Sydney, N.S.W.); Haskins, P. G.; Murphy, B. M.; New South Wales Dept. of Conservation and Land Management.;
Year: 1992., Callno: 631.459:631.61 INT [Q]
Book