Development of water resources in the lower Mekong Basin / - Bangkok : United Nations, 1957. - vii, 75 p. : ill. ; 28 cm. - Flood control series ; no.12 . - Flood control series ; no. 12. . Subjects--Topical Terms: Flood control--Mekong River. Dewey Class. No.: 627.4 / DEV 1957