Thesis (Ph. D.)--University of Minnesota, 1938. / Vita. "This article was presented in part at the joint session of the agricultural history society with the American historical association at Philadelphia on Dec. 29, 1937. It is a summary of the author's doctoral dissertation with the same title at the University of Minnesota in 1938"--P. 224. Includes bibliographical references.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/608021239 |
| Date | January 1900 |
| Creators | Johnstone, Paul Howard, |
| Publisher | [Minneapolis? |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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