Protyle: Revision history

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20 April 2016

  • curprev 23:4423:44, 20 April 2016Pablo Sender talk contribs 1,245 bytes +1,245 Created page with "'''Protyle''' (from Greek ''prōt''- proto- + ''hylē'' substance) is a hypothetical base substance from which all chemical elements were believed, in the 19th century, to hav..."