1.
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Additions to the knowledge of the amphibians of the Estacion de Biologia Tropical "Los Tuxtlas" Pérez Higareda, Gonzalo
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2.
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Additions to the knowledge of the herpetofauna of Oaxaca, Mexico Hobart M Smith
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3.
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FOSSIL LEGUME FRUITS FROM TERTIARY STRATA OF PUEBLA, MEXICO MAGALLONPUEBLA, S - CEVALLOSFERRIZ, SRS
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