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  1. 1

    Acerca del pensar científico / by Ander-Egg, Ezequiel, 1930-

    Published 1987
    Book
  2. 2
  3. 3

    Las fronteras del conocimiento / by De la Rosa, Miguel Angel

    Published 1996
    Book
  4. 4

    El pensamiento científico / by Padilla, Hugo

    Published 1986
    Book