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1.
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Cyanobacteria containing biofilms from a mayan monument in Palenque, Mexico Ramirez, M. - Hernandez-Marine, M. - Novelo, E. - Roldan, M.
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2.
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A graphic panorama of the freshwater algae from Mexico, Un Panorama gráfico de las algas de agua dulce de México Novelo, E. - Tavera, R.
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3.
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A new dicrocoeliid (Digenea: Dicrocoeliinae) parasite of rodents from Tlaxcala, Mexico. Lamothe-Argumedo, R. - Falcon-Ordaz, J. - Garcia-Prieto, L. - Fernandez-Fernandez, J.
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4.
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Second addition to the knowledge of the Batrachia and Reptilia of Costa Pica Cope, Edward Drinker
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5.
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Third addition to a knowledge of the Batrachia and Reptilia of Costa Rica Cope, Edward Drinker
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6.
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Contributions to our knowledge of the duration of life in vertebrate animals Flower, Stanley S
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7.
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Diversidad protozoológica de México. II. Especies asociadas a moluscos López-Ochoterena, E.
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8.
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The concise knowledge library: natural history Lydekker, Richard
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9.
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Circulación del Golfo de México Zambrano-Salgado, L. - Portilla-Casillas, J. - Rendón-Villalobos, R. - Jaimes de la Cruz, B. - Vidal, F. V. - Vidal, V. M. V. - Rodríguez-Espinosa, P. F.
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10.
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Contributions to our knowledge of the duration of life in vertebrate animals Flarer, Stanley Smith
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