File:PSM V84 D530 Facts and factors of development fig2.jpg
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Summary
| Description | Fig. 2. Two human spermatozoa. A, showing the surface of the flattened head; B, its edge; H, head; M, middle piece; T, tail (After G. Retzius) | |||
| Date | ||||
| Source | Edwin Grant Conklin: Facts and factors of development. The Popular science monthly, Volume 84, p526. New York, Popular Science Pub. Co., June 1914. Online: archive.org. | |||
| Author | Edwing Grant Conklin after G. Retzius | |||
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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 | 16:03, 11 February 2017 | | 1,377 × 428 (32 KB) | Opencooper | without internet archive processing |
| 14:47, 16 January 2014 |  | 1,354 × 440 (30 KB) | Ineuw | cleaned image | |
| 02:50, 19 March 2011 |  | 1,720 × 440 (41 KB) | Martin H. |
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