Management, operation, and maintenance of irrigation and drainage systems / prepared by the Committee on Operation and Maintenance of Irrigation and Drainage Systems of the Irrigation and Drainage Division of the American Society of Civil Engineers ; editors, William R. Johnson, James B. Robertson contributing authors, Albert J. Clemmens ... [et al.]. - Johnston, William R., 1934-; Robertson, James B., 1940-; Clemmens, Albert J. (ASCE manuals and reports on engineering practice, 1991)