File:Conway Zirkle (cropped).jpg

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Description
English: Conway Zirkle Circa 1932-1935.
Date
Source Conway Zirkle". Embryo Project Encyclopedia (1932-1935). ISSN: 1940-5030 http://embryo.asu.edu/handle/10776/3032.
Author AnonymousUnknown author
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Public domain
This work is in the public domain because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.

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Date/TimeThumbnailDimensionsUserComment
current16:23, 5 November 2018Thumbnail for version as of 16:23, 5 November 20181,908 × 3,293 (1.18 MB)GreenMeansGo (talk | contribs)File:Conway Zirkle.jpg cropped 8 % horizontally, 3 % vertically using CropTool with precise mode.

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