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  1. 1

    Proceedings of second Pan American scientific congress : the advisability of collegiate courses on marketing and distribution / by Carver, T. N.

    Subjects: “…RECURSOS NATURALES…”
    Article
  2. 2

    Proceedings of second Pan American scientific congress : the conservation of human energy / by Carver, T. N.

    Subjects: “…RECURSOS NATURALES…”
    Article