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Report, Caterpillar Diesel Tractor at Mark Weatherford's Farm, Arlington, Oregon, Friday, April 28-29, 1932

C. C. JohnsonHobart BeresfordW. J. Gilmore

出版	1932
URL	http://books.google.com.hk/books?id=n5TgjgEACAAJ&hl=&source=gbs_api

註釋

Report, covering the observations and tests of the first diesel tractor sold for agricultural purposes in the Pacific Northwest, by Professor C.C. Johnson of Washington State College, Professor Hobart Beresford of the University of Idaho, and Professor W.J. Gilmore of Oregon State College.