00000cam a22000003a 4500 UP-8027390931316263009 Buklod 20260210144217.0 a r |||| u| ta 170417s xx d r |||| u| 9789810877095 (iLib)UPMIN-00009338907 DECON eng HC 441 Z82 E5 E36 2010 RR7 Gunaratne, L.H.P. Policy options for sustainable river sand mining in Sri Lanka L.H.P. Gunaratne. Singapore Economu and Environment Program for Southeast Asia 2010.Asian Development Bank 2010. 46 p. EEPSEA research report no.2010-RR7 Sand and gravel mines and mining Environmental aspects Sri Lanka. Rivers Environmental aspects Sri Lanka. Economy and Environment Program for Southeast Asia. FO UPMIN UPMIN-MAIN HC 441 Z82 E5 E36 2010 RR7 Book