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Repositorio Atenea de la Facultad de Ciencias, UNAM >
Browsing by Author Zweifel, Richard G
Showing results 16 to 35 of 38
| Preview | Issue Date | Title | Author(s) | | 1981 | Genetics of color pattern polymorphism in the California kingsnake | Zweifel, Richard G |
| 1974 | Lamprolpeltis zonata (Lockington ex Blainville): California mountain kingsnake | Zweifel, Richard G |
| 1961 | Larval development of the tree frogs Hyla arenicolor and Hyla wrightorum | Zweifel, Richard G |
| 1977 | Liste der rezenten Ampbibien und Reptilien | Zweifel, Richard G |
| 1954 | Notes en the distribution of some reptiles in western Mexico | Zweifel, Richard G |
| 1952 | Notes en the lizarda of the Coronados Islands, Baja California, Mexico | Zweifel, Richard G |
| 1962 | Notes on the distribution and reproduction of the lizard Eumeces callicephalus | Zweifel, Richard G |
| 1952 | Pattern varlation and evolution of the mountain kingsnake, Lampropeltis zonata | Zweifel, Richard G |
| 1968 | Rana boylii Baird | Zweifel, Richard G |
| 1968 | Rana tarahumarae | Zweifel, Richard G |
| 1961 | Relationships of two whiptall lizards (genus Cnemidophorus) in western Mexico | Zweifel, Richard G |
| 1968 | Reproductive biology of anurans of the arid southwest, with emphasis on adaptation of embryos to temperature | Zweifel, Richard G |
| 1968 | Reproductive biology of Anurans of the arid Southwest, with emphasis on adaptation of embryos to temperature. | Zweifel, Richard G |
| 1958 | Resulte of the Puritan-American Museum of Natural History expedition te western Mexico | Zweifel, Richard G |
| 1960 | Results of the Puritan-American Museum of Natural History expedition to western Mexico | Zweifel, Richard G |
| 1959 | Snakes of the genw Imantodes In western Mexico | Zweifel, Richard G |
| 1956 | The identity of the Mexican lizard, Cnemidophorus gadovi | Zweifel, Richard G |
| 1958 | The lizard Eumeces tetragrammus in Coahulla, Mexico | Zweifel, Richard G |
| 1959 | The provenance of reptiles and amphibians collected in western Mexico by J. J. Mejor | Zweifel, Richard G |
| 1956 | Two pelobatid frogs from the Tertiary f North America and their relationships to fossil and recent forms | Zweifel, Richard G |
Showing results 16 to 35 of 38
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