File:PSM V84 D432 Rate of growth of seedlings of wheat.jpg
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Summary
| Description | Graph showing rate of growth of seedlings of wheat at temperatures between 40° and 108° F., plotted from data given in text-books of plant physiology. | |||
| Date | ||||
| Source | D. T. MacDougal: The measurement of environic factors and their biologic effects. The Popular science monthly, Volume 84, p428. New York, Popular Science Pub. Co., May 1914. Online: archive.org. | |||
| Author | D. T. MacDougal | |||
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Licensing
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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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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:55, 15 January 2014 | | 1,720 × 2,077 (279 KB) | Ineuw | Changed background to white |
| 23:36, 14 March 2011 |  | 1,720 × 2,077 (321 KB) | Martin H. |
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