File:EB1911 Variation and Selection - distribution - petals by buttercups.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:28, 12 January 2017 | 319 × 767 (75 KB) | Bob Burkhardt | {{Information |Description ={{en|1=Record of the frequency with which given numbers of petals occur in a certain race of buttercups.}} |Source =''Encyclopædia Britannica'' (11th ed.), v. 27, 1911, “Variation and Selection,” p. 910, fig.... |
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