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. English: Fleuron from book: An easy method of assaying and classing mineral substances. containing Plain and Easy Instructions for any person to examine The Products of his own Land, or such as are obvious in Excursions or Travels in foreign Countries, without having a complete Chemical Apparatus. To which is added, a series of experiments on the Fluor Spatosus, or Sparry Fluor. Abstracted from the Memoirs of the Royal Swedish Academy of Sciences for the Year 1771. By John Reinhold Forster, F. R. S. 312 An easy method of assaying and classing mineral substances Fleuron T032402-3
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