Soil degradation proceeding of the Land Use Seminar on Soil Degradation, Wageningen, 13-15 October 1980 - Land Use Seminar on Soil Degradation (1980 : Wageningen, Netherland); Boels, D.; Davies, D B (Rotterdam A. A. Balkema, 1981)
Includes bibliographies
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Keywords: Soil degradation -- Congresses; Humus -- Congresses; Land use, Rural -- Congresses