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1.
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Contribución al conocimiento del genéro Helvella (Ascomycota: Pezizales) en México: descripción de especies poco conocidas Vite, T - Villarruel Ordaz, JL - Cifuentes Blanco, Joaquín
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2.
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Use of curatorial data bases as an element to reconstruct taxonomic knowdlege: an example with Mexican papilionids and pierids (Insecta: Lepidoptera) Oñate Ocaña, L - Llorente Bousquets, Jorge Enrique
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3.
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A comparison of traditional elasticity and variance-standardized perturbation analyses: a case study with the tropical tree species Manilkara zapota (Sapotaceae) Cruz-Rodríguez, JA - López-Mata, L - Valverde-Valdés, María Teresa
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