Woodward, Sherman M. (Sherman Melville), 1871-, Okey, Charles W. (Charles William), 1886-, United States. Office of Experiment Stations · Washington, D.C. : U.S. Dept. of Agriculture · leaf 42
Fig. 1.—Main Ditch, Coal Creek Levee and Drainage District. … Fig. 2— Branch A, Coal Creek Levee and Drainage District. Bui. 304, U. S. Dept. of Agriculture. Plate VI.
Drainage · Pumping machinery
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