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    Factores y razones asociadas con el abandono de high school de los jóvenes de origen mexicano y blancos no hispanos en Estados Unidos por Román Macedo, Alejandro Francisco, Garay Villegas, Sagrario

    Publicado 2009
    “…ABSTRACT The aim of this paper is to analyze the factors and reasons for dropout of high school for a cohort of Mexican and white non Hispanic students. We use as source of data the National Education Longitudinal Survey (NELS 88-92), which is representative at national level. …”
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    Plant composition and structure of two post-livestock areas of Tamaulipan thornscrub, Mexico por Pequeño Ledezma, Miguel Angel, Alanís Rodríguez, Eduardo, Molina Guerra, Víctor Manuel, Mora Olivo, Arturo, Alcalá Rojas, Alejandro G., Martínez Ávalos, José Guadalupe, Garza Ocañas, Fortunato

    Publicado 2018
    “…Results: A total of 17 families, 40 genera and 42 species were registered, the most representative family was Fabaceae with 11 spp. The intensive livestock area had 36 species; a Margalef index of 4.44 and a 1.24 Shannon index, while the extensive livestock area had 32 species, a Margalef index of 4.24 and a 2.16 Shannon index. …”
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