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 D01 Inorganic Chemicals D007287 +
  D01.268 Elements D004602 +
   D01.268.271 Elements, Radioactive D004603 +
    D01.268.271.380 Francium D005605 


 D01 Inorganic Chemicals D007287 +
  D01.268 Elements D004602 +
   D01.268.549 Metals, Alkali D008672 +
    D01.268.549.250 Francium D005605 


 D01 Inorganic Chemicals D007287 +
  D01.268 Elements D004602 +
   D01.268.556 Metals, Heavy D019216 +
    D01.268.556.277 Francium D005605 


 D01 Inorganic Chemicals D007287 +
  D01.552 Metals D008670 +
   D01.552.528 Metals, Alkali D008672 +
    D01.552.528.328 Francium D005605 


 D01 Inorganic Chemicals D007287 +
  D01.552 Metals D008670 +
   D01.552.544 Metals, Heavy D019216 +
    D01.552.544.277 Francium D005605