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Enzyme evolution and the development of metabolic pathways Peretó, J - Fani, R - Leguina, JI - Lazcano Araujo Reyes, Antonio Eusebio
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2.
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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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3.
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FOSSIL LEGUME FRUITS FROM TERTIARY STRATA OF PUEBLA, MEXICO MAGALLONPUEBLA, S - CEVALLOSFERRIZ, SRS
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