 | Lauritzen, C. W. (Cyril Walker), 1905- 4n | (1) |
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 | Lauritzen, C. W. (Cyril Walker), 1905- 4n; Rain traps for intercepting and storing water for livestock / . Washington, D.C. : Agricultural Research Service, U.S. Dept. of Agriculture in cooperation with the Utah Agricultural Experiment Station, 1966. | |
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