kw.\*:("ADDIS-ABEBA,1976")
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ECONOMIC COMMISSION FOR AFRICA REGIONAL REPORT1978; WATER DEVELOPMENT AND MANAGEMENT. PROCEEDINGS OF THE UNITED NATIONS WATER CONFERENCE/1977/MAR DEL PLATA; GBR; OXFORD: PERGAMON; DA. 1978; NO 2; PP. 519-637; 8 ILL.Conference Paper
