Showing 1 - 1 results of 1 for search 'Peter W.U. Appel, PhD', query time: 0.02s Refine Results
  1. 1
    The Borax Method of Gold Extraction for Small-Scale Miners

    The Borax Method of Gold Extraction for Small-Scale Miners by Peter W.U. Appel, PhD, Leoncio Na-Oy

    Published 2012-01-01
    Article

Search Tools: