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  1. 1

    Contributions to the analysis and synthesis of knowledge

    Published 1951.
    Conference Proceeding Book
  2. 2

    Epistemología de la Química: fundamentación observacional by Prélat, Carlos E.

    Published 1947
    Book
  3. 3
  4. 4

    Plan Nacional de Desarrollo - Cambio con Equidad

    Published 1983
    Book