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Tohutoru Kātū Chicago (17th ed.)Soren, Dalager. Experience of The Nordic Countries in Tackling The Environmental Impacts of Energy Supply and Use. London: World Energy Council, 1992.
Tohutoro MLA (9th ed.)Soren, Dalager. Experience of The Nordic Countries in Tackling The Environmental Impacts of Energy Supply and Use. World Energy Council, 1992.