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1.
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The concise knowledge library: natural history Lydekker, Richard
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2.
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Current State of Knowledge of the Benthic Marine Algae of the Mexican Tropical Pacific. González González, Jorge - León Tejera, Hilda Patricia - Candelaria Silva, Carlos Federico - Gold Morgan, Michele Louise - Serviere, E - León Alvarez, Daniel - Fragoso, D
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3.
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Addresses in memory of Edward Drinker, Cope delivered at the meeting in the hall of the American Fhilosophical Society held at Philadelphiafor promotig useful knowledge Anonymous
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4.
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A survey of internal oral features of leptodactyloid larvae (Amphibia: Anura) Wassersug, Richard J - W Ronald Heyer
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5.
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Contribution to the knowledge of the nematodes that parasitize the reptiles of Mexico Caballero, R G
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6.
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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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Spindly leg syndrome in frogs: present knowledge and future directions to elucidate its causes Marlett, James H - Victor B Eichler - Michelle Fellows-Hagemeister
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8.
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Contributions to our knowledge of the duration of life in vertebrate animals Flarer, Stanley Smith
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