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RADON




  In Israel we have these days a new concern about radon.A very high 
concentration of radon was found in a class room in  Jerusalem up to: 
137,000 Bq/m3 (No mistake).
  Is this concentration possible????
 
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* RAFI SREBRO    BEN-GURION UNIVERSITY P.O.B 653 BEER-SHEVA    *
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