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Academy Journals Public Knowledge Project under the GNU General Public License
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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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Web of Knowledge Thomson Reuters
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International Union for conservation of Nature Library International Union for Conservation of Nature - Ramsar Convention on Wetlands - United Nations Environment Programme World Conservation Monitoring Centre
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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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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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Cysticercosis: present state of knowledge and perspectives. Flisser, A. - Willms, K. - Laclett, J.P. - Larralde, C. - Ridaura, C. - Beltran, F.
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