| Blake, S. F. (1921). Sexual differences in coloration in the spotted turtle, clemmys guttata. Proceedings of the United States National Museum, 59, 463–469. |
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| Added by: Sarina Wunderlich 06 Jul 2014 16:10:32 UTC |
Pop. 4%
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| Lönnberg, E. (1896). Is the florida box tortoise a distinct species? Proceedings of the United States National Museum, 19(1107), 253–254. |
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| Added by: Sarina Wunderlich 25 Jun 2011 12:41:43 UTC |
Pop. 2.75%
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| Stejneger, L. (1941). Notes on mexican turtles of the genus kinosternon. Proceedings of the United States National Museum, 90(3115), 457–459. |
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| Added by: Admin 06 Jan 2014 18:23:11 UTC |
Pop. 4%
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| Taylor, W. E. (1895). The box tortoises of north america. Proceedings of the United States National Museum, 17(1019), 573–588. |
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| Added by: Sarina Wunderlich 28 Aug 2011 21:15:23 UTC |
Pop. 3.5%
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| True, F. W. (1882). On the north american land tortoises of the genus xerobates. Proceedings of the United States National Museum, 4(249), 434–449. |
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| Added by: Sarina Wunderlich 28 Aug 2011 21:15:24 UTC |
Pop. 3.5%
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