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The management of water quality and the environment: proceedings of a conference held by the International Economic Association at Lyngby, Denmark

By Rothenberg, J.. London: Macmillan, 1974 . xx, 305p.; 22cm..

By Rothenberg, J.G.. London: Macmillan; 1974 . xxi, 273p. , Includes index. 23cm..

By Heggie, Ian G.. Washington : The World Bank , 1991 . 32p : 30 cm.. 0821317563