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FOSSIL LEGUME FRUITS FROM TERTIARY STRATA OF PUEBLA, MEXICO MAGALLONPUEBLA, S - CEVALLOSFERRIZ, SRS
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LATEST OCCURRENCE OF THE EXTINCT GENUS CEDRELOSPERMUM (ULMACEAE) IN NORTH-AMERICA - CEDRELOSPERMUM-MANCHESTERI FROM MEXICO MAGALLONPUEBLA, S - CEVALLOSFERRIZ, SRS
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Population dynamics of Mammillaria magnimamma Harworth. (Cactaceae) in a lava-field in central Mexico Valverde-Valdés, María Teresa - Quijas, S - López-Villavicencio, M - Castillo-Argüero, Silvia
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