File:PSM V84 D066 Poorland farm wheat regular treatment.jpg
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edit| Description | Poorland farm: Wheat, 1913. Regular treatment, 351⁄2 bushls per acre. | |||
| Date | ||||
| Source | Cyril G. Hoplins: The Illinois System of permanent fertility. The Popular science monthly, Volume 84, p62. New York, Popular Science Pub. Co., January 1914. Online: archive.org. | |||
| Author | Unknown, Cyril G. Hoplins | |||
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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 09:12, 7 March 2018 | | 1,709 × 2,105 (585 KB) | Ineuw (talk | contribs) | Cleaned image and added frame |
| 14:18, 14 March 2011 |  | 1,687 × 2,083 (549 KB) | Martin H. (talk | contribs) |
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