Textbooks on hydrology : a contribution to the international hydrological decade. - Paris : Unesco, c 1974. - Vols. : ill. ; 27 cm. - Technical papers in hydrology. . V. 2- Analysis of selected textbooks ; 331 331 ISBN: 92-3-101148-0 Subjects--Topical Terms: Hydrology. Dewey Class. No.: 551.49 / U3t