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  1. 1

    Una introducción a la ética social descriptiva / by Delgado Ocando, José Manuel

    Published 1966
    Book
  2. 2

    Wissenschaft und Ethik / by Lenk, Hans

    Published 1991
    Book
  3. 3

    Sociología de Marx / by Lefebure, Henri

    Published 1969
    Book
  4. 4

    Praxis y espacio exterior / by Ardao, Arturo

    Article
  5. 5

    Libro homenaje a Rafael Pizani /

    Published 1979
    Book
  6. 6