Large-scale ground-water development. United Nations. Water Resources Development Centre. Water resources development. JX1977 .A2 E/3424 551.49 UNL "ST/ECA/65." "United Nation publication. Catalogue no.: 60.II.B3." New York, 1960. 1960. 1960 Text vi, 84 p. eng E/3424 United Nations. Document ; E/3424. United Nations. Document ; ST/ECA/65.