00345nam a2200121 a 450000500170000002000150001708200190003210000220005124500560007326000370012930000180016649000390018420251203091943.0  a0821323520  a363.7,bD, Mun  aMunasinghe, Mohan  aEnvironmental Economics and Sustainable Development  aWashingtonbThe World Bankc1993  a112p.c28 cm.  aWorld Bank Environment PaperdNo.3