99 0.5 2000 *0.71 ° 1.54 Fig. 6—TIsointensity contours for 200- to 350-p particle diameters in milliroentgens per hour at ld hr.
99 0.5 2000 *0.71 ° 1.54 Fig. 6—TIsointensity contours for 200- to 350-p particle diameters in milliroentgens per hour at ld hr.