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Repositorio Atenea de la Facultad de Ciencias, UNAM >
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Showing results 16054 to 16073 of 26345
| Preview | Issue Date | Title | Author(s) | | 1823 | Observations on the natural history and structure of the aquatic salamander, and on the development of the larva of these animals from the egg up to the perfect animal | Rusconi, Mauro |
| 1957 | Observations on the natural history of four species of whiptail lizard, Cnemidophorus (Sauria, Teiidae) in trans-Pecos Texas | Milstead, William W |
| 1945 | Observations on the posterior part of the neural plate in Amblystoma. I. The prospective significance of the posterior neural plate mesoderm | Spofford, WR |
| 1948 | Observations on the posterior part of the neural plate in Amblystoma. II. The inductive effect of the intact posterior part of the chorda-mesodermal axis on competent prospective ectoderm | Spofford, WR |
| 1886 | Observations on the presence of the corpus callosum in the brains of amphibians and reptiles | Osborn, Henry Fairfield |
| 1969 | observations on the reproductive biology of the American ringed snake | Petzold, H. G |
| 1875 | Observations on the sizes and shapes of the red corpuscles of the blood of vertebrates, with drawings of them to a unifom scale, and extended and revised tables of measurements | Gulliver, George |
| 1977 | Observations on the snakes of Queretaro, Mexico | Minton, Sherman A, Jr.; Brooks Minton de Cervantes |
| 1971 | Observations on the tumor-like growth in the chuckwalla, Sauromalus varius | Bostic, Dennis L |
| 1972 | Observations on the vertebral hypapophyses and associated musculatura in some snakes, with special reference to the Colubridae | Malnate, Edmond V |
| 1969 | Observations on the Vizcaino Desert and its biota | Wiggins, Ira L |
| 1964 | Observations on the water economy and electrolyte excretion of chuckwallas (Lacertilia, Sauromalus) | Norris, Kenneth S.; William R. Dawson |
| 1941 | Observations on the winter activities of desert reptiles | Cowles, Raymond Bridgman |
| 1975 | Observations on tongue extensión of vine snakes (genus Oxybelis) with suggested behavioral hypotheses | Keiser, Edmund D. Jr |
| 1987 | Observations on white and yellow venoms from an individual southern Pacific rattlesnake (Crotalus viridis helleri). | Johnson, E. K, K. V. Kardong; C. L. Ownsby |
| 1874 | Observations sur la fécondation des batraciens urodéles | Robin, Charles Philippe |
| 1874 | Observations sur la fécondation des urodeles | Robin, Charles Philippe |
| 1874 | Observations sur la fécondation des urodèles | Robin, Charles Philippe |
| 1961 | Observations sur la natation chez les reptiles | Tercafs, R. R |
| 1866 | Observations sur la reproductions dans la ménagerie des reptiles du Muséum d´Histoire Naturelle, des axolotls , batraciens urodeles à branchies extérieures du Mexique, sur leur développement et sur leurs métamorphoses | Duméril, Auguste Henri André |
Showing results 16054 to 16073 of 26345
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