| Campbell, H. W., & Busack, S. D. (1979). Laboratory maintenance. In M. Harless & H. Morlock (Eds.), Turtles: Perspectives and Research. New York (Wiley). |
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| Last edited by: Beate Pfau 13 Sep 2008 18:44:31 UTC |
Pop. 2.5%
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| Campbell, H. W., & Evans, W. E. (1967). Sound production in two species of tortoises. Herpetologica, 23(3), 204–209. |
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| Added by: Admin 21 Nov 2009 11:53:07 UTC |
Pop. 3.5%
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| Campbell, H. W., & Howell, T. R. (1965). Herpetological records from nicaragua. Herpetologica, 21(2), 130–140. |
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| Last edited by: Beate Pfau 19 Jul 2009 15:14:55 UTC |
Pop. 3.5%
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| Campbell, H. W., & Evans, W. E. (1972). Observations on the vocal behavior of chelonians. Herpetologica, 28(3), 277–280. |
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| Added by: Admin 25 Aug 2008 21:58:01 UTC |
Pop. 3.25%
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