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© May 2005 Lorentz JÄNTSCHI && Sorana Daniela BOLBOACĂ

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 D01 Inorganic Chemicals D007287 +
  D01.268 Elements D004602 +
   D01.268.380 Halogens D006219 +
     D01.268.380.075 Astatine D001246 
     D01.268.380.112 Bromine D001966 
     D01.268.380.150 Chlorine D002713 
     D01.268.380.300 Fluorine D005461 
     D01.268.380.400 Iodine D007455