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1.
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Biogeography, current knowledge and conservation of threatened vascular plants characteristic of Mexican temperate forests Vega, IL - Ayala, OA - Contreras-Medina, R - Vargas, AP
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2.
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A contribution to the knowledge of the l fauna of El Petén, Guatemala Stuart, Laurence Cooper
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3.
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Third addition to a knowledge of the Batrachia and Reptilia of Costa Rica Cope, Edward Drinker
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4.
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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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5.
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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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6.
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Cysticercosis: present state of knowledge and perspectives. Flisser, A. - Willms, K. - Laclett, J.P. - Larralde, C. - Ridaura, C. - Beltran, F.
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7.
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Antigens of taeniid cestodes. Williams, J.F. - Sandeman, R.M.
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8.
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Seroepidemiology of human cysticercosis in Mexico. Woodhouse, E. - Flisser, A. - Larralde, C.
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9.
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New species of the Stenus hostilis group, mainly from Mexico (Coleoptera: Staphylinidae) (265th contribution to the knowledge of Steninae) Puthz,V.
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10.
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Biochemical and immunological characterization of antigen B purified from cysticerci of Taenia solium. Guerra, G. - Flisser, A. - Canedo, L. - Laclette, J.P.
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