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© May 2005 Lorentz JÄNTSCHI && Sorana Daniela BOLBOACĂ

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 D01 Inorganic Chemicals D007287 +
  D01.578 Minerals D008903 +
   D01.578.750 Silicon Dioxide D012822 +
     D01.578.750.300 Diatomaceous Earth D007692 
     D01.578.750.600 Quartz D011791 


 D01 Inorganic Chemicals D007287 +
  D01.650 Oxygen Compounds D017601 +
   D01.650.550 Oxides D010087 +
    D01.650.550.825 Silicon Dioxide D012822 +
      D01.650.550.825.400 Diatomaceous Earth D007692 
      D01.650.550.825.600 Quartz D011791 


 D01 Inorganic Chemicals D007287 +
  D01.837 Silicon Compounds D017655 +
   D01.837.725 Silicon Dioxide D012822 +
     D01.837.725.400 Diatomaceous Earth D007692 
     D01.837.725.600 Quartz D011791 
     D01.837.725.700 Silicic Acid D012824