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Lua i Stíl Chicago (17ú heag.)Asian Development Bank. Environment Division. Economic Evaluation of Environmental Impacts: A Workbook. Manila, Philippines: Environmental Division, Office of Environment and Social Development, Asian Development Bank, 1996.
Lua MLA (8ú heag.)Asian Development Bank. Environment Division. Economic Evaluation of Environmental Impacts: A Workbook. Environmental Division, Office of Environment and Social Development, Asian Development Bank, 1996.
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