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© May 2005 Lorentz JÄNTSCHI && Sorana Daniela BOLBOACĂ

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 D01 Inorganic Chemicals D007287 +
  D01.268 Elements D004602 +
   D01.268.549 Metals, Alkali D008672 +
    D01.268.549.550 Potassium D011188 


 D01 Inorganic Chemicals D007287 +
  D01.552 Metals D008670 +
   D01.552.528 Metals, Alkali D008672 +
    D01.552.528.652 Potassium D011188