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1.
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The internal ear of salamanders Hilton, William A
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2.
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The choroid plexus of the lateral and third ventricles of tailed amphibia Hilton, William A
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3.
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The effects of heteroplastic hypophyseal grafts upon the axolotl, Ambystoma mexicanum Blount, Raymond F
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4.
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Transplantation and extirpation of the pituitary rudiment and the effects upon pigmentation in the urodele embryo Blount, Raymond F
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5.
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Herbivory in a small iguanid lizard, Sceloporus torquatus torquatus Burquez, A - Flores Villela, Oscar Alberto - Hernandez, A
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6.
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Taxonomic status of the snake genera Conopsis and Toluca (Colubridae) Goyenechea, I - Flores Villela, Oscar Alberto
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7.
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Ophryacus undulatus in the Mexican state of Hidalgo Flores Villela, Oscar Alberto - Mendoza, F - Hernández, E - Mancilla, M - Godínez, E - Goyenechea Meyer, I
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8.
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A New Species of Toad of the Genus Incilius from the Sierra Madre Occidental of Chihuahua, Mexico (Anura: Bufonidae) Santos Barrera, G - Flores Villela, Oscar Alberto
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9.
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Morphological Variation in a Polychromatic Population of Chiricahua Leopard freogs (Lithobates chiricahuensis) from Durango, Mexico Streicher, JW - Sheehy III, CM - Flores Villela, Oscar Alberto - Campbell, JA
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10.
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Richness, endemism patterns and conservation of red oaks (Quercus L., section Lobatae) in Mexico and Central America. Torres Miranda, C - Luna Vega, Mercedes Isolda - Oyama, K
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