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© May 2005 Lorentz JÄNTSCHI && Sorana Daniela BOLBOACĂ

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 D01 Inorganic Chemicals D007287 +
  D01.268 Elements D004602 +
   D01.268.556 Metals, Heavy D019216 +
    D01.268.556.435 Lead D007854 


 D01 Inorganic Chemicals D007287 +
  D01.552 Metals D008670 +
   D01.552.544 Metals, Heavy D019216 +
    D01.552.544.435 Lead D007854