The Online Books Page

Online Books by

R. M. Wirka

Books from the extended shelves:

• Wirka, R. M.: A test of treated timbers in a mine at Negaunee, Mich. (U.S. Dept. of the Interior, Bureau of Mines, 1950), also by F. S. Crawford (page images at HathiTrust)
• Wirka, R. M.: Tire-tube method of fence post treatment ([Madison? Wis.], 1938), also by Forest Products Laboratory (U.S.) and George M. Hunt (page images at HathiTrust)
• Wirka, R. M.: Tire-tube method of fence-post treatment (U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 1940), also by University of Wisconsin, Forest Products Laboratory (U.S.), and United States Forest Service (page images at HathiTrust)
• Wirka, R. M.: Tire-tube method of fence-post treatment (U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 1945), also by University of Wisconsin, Forest Products Laboratory (U.S.), and United States Forest Service (page images at HathiTrust)

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