1.
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Contributions to our knowledge of the duration of life in vertebrate animals Flower, Stanley S
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Second addition to the knowledge of the Batrachia and Reptilia of Costa Pica Cope, Edward Drinker
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Third addition to a knowledge of the Batrachia and Reptilia of Costa Rica Cope, Edward Drinker
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Encuesta serohematológica en bovinos tripanosusceptibles de dos unidades agroecológicas del Valle de Aroa, Serahaematological survey in bovine tripanosensitiveness at two agroecological units of Aroa Valley Sandoval, Espartaco - Espinoza, Emir - González, Nersa - Morales C., Gustavo A. - Montilla, William - Jiménez, Delia
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Network Effects and Welfare Cultures Luttmer, Erzo - Bertrand, Marianne - Mullainathan, Sendhil
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