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1.
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Contributions to the knowledge of the systematic arrangement and anatomy of certain genera and species of Squamata Beddard, Frank E
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2.
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Relative Uncertainty and Additively Representable Set Rankings BOSSERT, Walter - SLINKO, Arkadii
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3.
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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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