Showing 1 - 2 results of 2 for search 'Principia Press', query time: 0.02s Refine Results
  1. 1
    The variate difference method
    by Tintner, Gerhard
    Published 1940
    “…Principia Press…”
    Book
  2. 2
    The summation of series /
    “…The Principia Press of Trinity University,…”
    Book
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