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Increased energy economy and efficiency in the ECE region : study on measures taken, or which might be taken, to achieve increased economy and efficiency in the extraction, conversion, transport, and use of energy in the ECE region | Bok | 620.9.003(4) E Economic Commission for Europe / - New York : United Nations, 1976. - VI, 101 s. - Språk: Engelsk | Economic Commission for Europe | 1976 |