01024mam a2200241 4500009626156MiAaHDL20110322000000.0m d cr bn ---auaua800812m19561958miua 00010 eng dsdr-wu1686817sdr-ucbk.991061064109706532(OCoLC)6612155TXATXATL233.G7 1956Gray, Roy Burton,1884-Development of the agricultural tractor in the United States,compiled by R. B. Gray.[St. Joseph, Mich.,American Society of Agricultural Engineers,1956-58]2 pts.illus.United States. Agricultural Research Service. Agricultural Engineering Research Branch. Information series, no. 107A limited ed. was compiled and printed by the Agricultural Engineering Research Branch, Agricultural Research Service in 1954.Cover title.Mode of access: Internet.Agricultural machineryHistory.TractorsHistory.United States.Agricultural Research Service.Agricultural Engineering Research Branch.00962615620110316155652.020110322000000.020120815145319.02024-07-21T17:58:45Z2024-07-21T17:30:02ZSDR-WUUNKNOWNloader.pl-001-001BKsdr-wu1686817wuSDRWUwu.89031278336WU11686817WUWU20240721googlewu.8903127833611958pdrenWUWU20240721googlewu.8903467840921958pdrenUCUCBK20241127googleuc1.c0275284601958pdusren