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		No cover image available Agricultural implements and machines in the collection of the National Museum of History and Technology, by John T. Schlebecker. by National Museum of History and Technology Schlebecker, John T Series: Smithsonian studies in history and technology ; no. 17. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, Smithsonian Institution Press; [for sale by the Supt. of Docs., U.S. Govt. Print. Off. ] 1972 Availability: Items available for loan: Nash Library (1)Call number: S678.U62W376.
		No cover image available Custom farm services in the United States, status and potential / by G.D. Irwin and J.B. Penn. by Irwin, George D Penn, J. B Series: ERS ; 583 Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, D.C. : Economic Research Service U.S. Dept. of Agriculture, 1975 Availability: Items available for loan: Nash Library (1)Call number: S675.8.I795 1975.

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