Kraatz, D. B. Small Hydraulic Structures - Rome : Food and Agriculture Organization of the United Nations, 1975 - XV, 292 p. : ill - Fao Irrigation and Drainage Paper ; No. 26/1-2 . ISBN: 9251001618 ISSN: Subjects--Topical Terms: Hydraulic Structures Dewey Class. No.: 627 / KRA