Showing 1 - 3 results of 3 for search 'Helmer, John', query time: 0.01s Refine Results
  1. 1

    The deadly simple mechanics of society by Helmer, John

    Published 1974
    Book
  2. 2
  3. 3

    Urbanman the psychology of urban survival by Helmer, John

    Published 1973
    Book

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