Geographic Variation in the Mexican Pygmy Rattlesnake, Sistrurus ravus, with the description of a new species
CAMPBELL, J.A., ARMSTRONG, B.L.
USA 1979, Sep., 14 Seiten, 5 Abb., eine Karte.
| Author | CAMPBELL, J.A., ARMSTRONG, B.L. |
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| Author | CAMPBELL, J.A., ARMSTRONG, B.L. |
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