Development of the agricultural tractor in the United States /

Bibliographic Details
Main Author:	Gray, Roy Burton, 1884-
Corporate Author:	United States. Agricultural Research Service. Agricultural Engineering Research Branch
Format:	Book
Language:	English
Published:	[St. Joseph, Mich.] : [American Society of Agricultural Engineers], [1956-58]
Series:	Information series (United States. Agricultural Research Service. Agricultural Engineering Research Branch) ; no. 107.
Subjects:	Tractors > History. Agricultural machinery > History.

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