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Books from the extended shelves:
Ervin, Guy: Bibliography relating to farm structures / by Guy Ervin. (Washington, D.C. : U.S. Dept. of Agriculture, 1931) (page images at HathiTrust)
Ervin, Guy: Control of gelation in extraction of alumina from lime-soda-clay sinters / by Guy Ervin, Delwin D. Blue, and John E. Conley. ([Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, 1946) (page images at HathiTrust)
Ervin, Guy: Irrigation under the provisions of the Carey Act / Guy Ervin. (Washington, D.C. : U.S. Dept. of Agriculture, Office of the Secretary, 1919) (page images at HathiTrust)See also what's at your library, or elsewhere.
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