TY - GEN AU - Kotagama, Hemasiri TI - Estimates of environmental unit values in Sri Lanka applicable to extended benifit cost analysis of invesment projects U1 - 333.7 PY - 1998/// CY - Peradeniya PB - University of Peradeniya KW - ECONOMICS KW - ENVIRONMENTAL ASSESSMENT KW - ENVIRONMENTAL ECONOMICS KW - ENVIRONMENTAL IMPACT ASSESSMENT KW - ENVIRONMENTAL VALUATION KW - NATURAL RECSOURCE ECONOMICS KW - NATURAL RESOURCES ER -