00000cam a22000003a 4500 UP-99796217610708625 Buklod 20130509112710.0 m |o d | ta 130509s1987 xx d r |||| u| (iLib)UPD-00198103804 DECON eng HC 453 U52 1987 no.1 Cruz, Wilfrido D. The environmental effects of soil erosion economic valuation issues for Philippine uplands. College, Laguna College of Economics and Management, University of the Philippines at Los Baños 1987. 26 leaves Discussion paper series / University of the Philippines at Los Baños. College of Economics and Management 87-01 Soil erosion Philippines Environmental aspects. Watershed management Philippines. FI UPD DECON HC 453 U52 1987 no.1 Book