BUTLIN, J. Economics of environmental and natural resource policy#J.A. Butlin. Westiview Press.
Lua i Stíl Chicago (17ú heag.)BUTLIN, J.A. Economics of Environmental and Natural Resource Policy#J.A. Butlin. Westiview Press.
Lua MLA (8ú heag.)BUTLIN, J.A. Economics of Environmental and Natural Resource Policy#J.A. Butlin. Westiview Press.
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