sponsored by the Irrigation and Drainage Division of the American Society of Civil Engineers and the Hawaii Section, ASCE ; cooperating sponsors, American Society of Agricultural Engineers ... [and others] ; edited by William F. Ritter
sponsored by the Irrigation and Drainage Division of the American Society of Civil Engineers ; co-sponsored by the Nebraska Section, ASCE, in cooperation with the American Society of Agricultural Engineers ... [and others] ; edited by DeLynn R. Hay