摘要：Toward March 1970 up to May 1972 it was monthly measured the Radium quantity, available in, Tehran milk, fortunate1y the results were in accordance to a reasonable value. The only remarkable point was that in wintertime, the Indio activity decreased to minimum of 0.02 Pci/lit, and in spring time it went up to a maximum of 0.09 Pci/lit. The next note worthy point was observed in a special contaminated area in Ramsar that with comparison of our results showed a prominent value near 0.8 Pci/lit.
