Soil degradation : proceedings of the Land Use Seminar on Soil Degradation, Wageningen, 13-15 october 1980 - Boels, D; Davies, D. B; Johnston, A. E; Land Use Seminar on Soil Degradation (1980: Wageningen, Netherlands) (1982)
Keywords: Erosión-Congresos; Humus-Congresos; Uso de la Tierra Rural