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© May 2005 Lorentz JÄNTSCHI && Sorana Daniela BOLBOACĂ

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 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