Books by Allan S. Humpherys:
Books in the extended shelves:
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Humpherys, Allan S., 1926-: Cast-in-place 2-foot concrete trapezoidal flow-measuring flumes (Agricultural Research Service, U.S. Dept. of Agriculture, 1977), also by James A. Bondurant and United States. Agricultural Research Service (page images at HathiTrust)- Humpherys, Allan S., 1926-: Hydraulic and geometrical relationships of lay-flat irrigation tubing (U.S. Dept. of Agriculture, 1964), also by C. W. Lauritzen (page images at HathiTrust)
- Humpherys, Allan S., 1926-: Plastic film for controlling seepage losses in farm reservoirs (Utah Agricultural Experiment Station, 1956), also by C. W. Lauritzen and Frank W. Haws (page images at HathiTrust)
Find more by Allan S. Humpherys at your library, or elsewhere.