Reciprocity Article by Phil Davis 2016-02-07

Reciprocity Article by Phil Davis

  1. frednewman

    frednewman Advertiser

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    Last edited by a moderator: Feb 6, 2016 at 5:34 PM
  2. Mahler_one

    Mahler_one Member

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    Thanks for posting the article Fred. It's pretty obvious why those of us who have taken the BTZS course with either Mr. Davis or you retain a very high opinion of the integrity of the BTZS testing methods and "system". I'm not sure that Phil Davis has received enough credit for what he has contributed.