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© May 2005 Lorentz JÄNTSCHI && Sorana Daniela BOLBOACĂ

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 H01 Natural Sciences D010811 +
  H01.770 Science D012586 +
   H01.770.461 Models, Theoretical D008962 +
    H01.770.461.545 Models, Educational D017145 


 I02 Education D004493 +
  I02.903 Teaching D013663 +
   I02.903.302 Models, Educational D017145