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© May 2005 Lorentz JÄNTSCHI && Sorana Daniela BOLBOACĂ

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 G03 Environment and Public Health D004778 +
  G03.230 Environment D004777 +
   G03.230.150 Environment, Controlled D004780 +
    G03.230.150.440 Space Simulation D018561 +
      G03.230.150.440.950 Weightlessness Simulation D018474 +