Description of a new species of snake of the colubrid genus Gyalopion from the State of Zacatecas, Mexico /
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| Other Authors: | |
| Format: | Book |
| Language: | English |
| Published: |
San Francisco :
The Academy,
1961.
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| Series: | Occasional papers of the California Academy of Sciences ;
no. 26. |
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| Item Description: | Cover title. |
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| Physical Description: | 4 pages : illustrations ; 26 cm. |
| Bibliography: | Bibliography: page 4. |