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Flood control journal. No. 26, March 1956
(United Nations, 1956-03)
Flood control journal. No. 24, September 1955
(United Nations, 1955-09)
Flood control journal. No. 36, September 1958
(United Nations, 1958-09)
Flood control journal. No. 15, June 1953
(United Nations, 1953-06)
Flood control journal. No. 11, June 1952
(United Nations, 1952-06)
Flood control journal. No. 12, October 1952
(United Nations, 1952-10)