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  1. 2741
  2. 2742
  3. 2743

    Contradicciones éticas de las responsabilidades sociales en la bibliotecología por Muela Meza, Zapopan Martín

    Publicado 2007
    “…It shows evidences on the fact that the professionals of the documental information (PDIs, included librarians) which works were analized that they only show an analysis of the ethical phenomenon exclusively from philosophy, or from a social science, or from philosophy and combined with a social science, but in all the cases none of them include an analysis from the natural sciences such as biology or neuropsicology. …”
    Enlace del recurso
    Sección de libro.
  4. 2744

    Estudio geobiológico de la formación La Virgen y sus facies transicionales en los Potreros de Menchaca y La Virgen, Coahuila. por Gutiérrez Alejandro, Alejandra Guadalupe

    Publicado 2018
    “…Even when this formation was identified and described more tan 50 years ago in pioneer geological studies in northeastern Mexico, and the fact that it is a well-exposed sedimentary unit outcropping in several localities in Coahuila and Chihuahua, the Virgen Formation has remained scarcely studied, especially under a biosedimentological perspective. …”
    Enlace del recurso
    Tesis
  5. 2745

    Control reproductivo y larvario del catan (Atractosteus spatula) por González Lázcarí, Martín

    Publicado 2006
    “…Several aspects have hindered the successful reproduction of adult alligator gar, such as their short natural reproductive season, restricted to only a week per year, the mean age of the breeders, estimated in 15 years, the fact that females cannot be cannulated to determine their sexual maturity and first and foremost because of the impossibility to distinguish males from females, which prevents the establishment of an adequate sex proportion required for optimal fertilization. …”
    Enlace del recurso
    Tesis
  6. 2746

    Estudio geobiológico de la formación La Virgen y sus facies transicionales en los Potreros de Menchaca y La Virgen, Coahuila. por Gutiérrez Alejandro, Alejandra Guadalupe

    Publicado 2018
    “…Even when this formation was identified and described more tan 50 years ago in pioneer geological studies in northeastern Mexico, and the fact that it is a well-exposed sedimentary unit outcropping in several localities in Coahuila and Chihuahua, the Virgen Formation has remained scarcely studied, especially under a biosedimentological perspective. …”
    Enlace del recurso
    Tesis
  7. 2747

    Control reproductivo y larvario del catan (Atractosteus spatula) por González Lázcarí, Martín

    Publicado 2006
    “…Several aspects have hindered the successful reproduction of adult alligator gar, such as their short natural reproductive season, restricted to only a week per year, the mean age of the breeders, estimated in 15 years, the fact that females cannot be cannulated to determine their sexual maturity and first and foremost because of the impossibility to distinguish males from females, which prevents the establishment of an adequate sex proportion required for optimal fertilization. …”
    Enlace del recurso
    Tesis
  8. 2748

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