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Ideas para innovar: La evalulación figuroanalógica, Ideas to innovate: figure-analogy evaluation Blanco Gutiérrez, Oscar - Arias Lara, Sergio Alejandro
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A contribution to the knowledge of the l fauna of El Petén, Guatemala Stuart, Laurence Cooper
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Third addition to a knowledge of the Batrachia and Reptilia of Costa Rica Cope, Edward Drinker
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Some additions to the knowledge of the anatomy, principally of the vascular system, of Hatteria, Crocodilus and certain Lacertilia Beddard, Frank E
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A contribution to a knowledge of the herpetology of a portion of the savanna region of central Petén, Guatemala Stuart, Laurence Cooper
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Presencia del budismo de Níchiren Daishonin en Venezuela, The presence of Nichiren Daishonin buddhism in Venezuela Quintero Montilla, María del Pilar
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