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- 2 editions - first published in 1956
- 1 edition - first published in 1966
The introduction of farm machinery in its relation to the productivity of labor in the agriculture of the United States during the nineteenth century1 edition - first published in 1931
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History Created April 1, 2008 ·
|March 31, 2017||Edited by Clean Up Bot||add VIAF and wikidata ID|
|June 6, 2012||Edited by VacuumBot||Removed period from death date|
|September 9, 2008||Edited by RenameBot||fix author name|
|April 1, 2008||Created by an anonymous user||initial import|