Talk:Pumpjack: Revision history

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21 June 2019

1 February 2019

  • curprev 06:4806:48, 1 February 2019777 talk contribs 678 bytes +678 Created page with "== Tips formula is wrong? == Maybe I'm missing something? But the formula is confusing. At the least, it seems to contradict the text immediately prior that (correctly) states..."