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 conta...
