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© May 2005 Lorentz JÄNTSCHI && Sorana Daniela BOLBOACĂ

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 J01 Technology, Industry, and Agriculture D013676 +
  J01.576 Industry D007221 +
   J01.576.370 Extraction and Processing Industry D019652 +
     J01.576.370.400 Metallurgy D008669 +
     J01.576.370.500 Mining D008906 +