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© May 2005 Lorentz JÄNTSCHI && Sorana Daniela BOLBOACĂ

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 H01 Natural Sciences D010811 +
  H01.091 Astronomy D001256 +
   H01.091.800 Solar System D016082 +
    H01.091.800.700 Planets D016083 +
     H01.091.800.700.200 Earth (Planet) D018534 +
      H01.091.800.700.200.500 Moon D016081