00920nam a2200205Ia 4500 CTU_16369 210402s9999 xx 000 0 und d 631.4 S732 Spaan, W. P. Course instruction : Soil conservation and erosion control W. P. Spaan Wageningen Wageningen Agricultural Univ 1979 The purpose of the practical work is to investigate: 1) The causes of erosion in the Project Area. 2) The degree of the occuring erosion. 3) The consequenses of the erosion for present and future agriculture. 4) Measures to be taken in order to prevent or to control the erosion both on the field and in the drainage system Soil conservation,Soil erosion,Soil science Nguyễn Quang Điền Trung tâm Học liệu Trường Đại học Cần Thơ