; és ae * % oy iS 4 ie 4 %, “I Fig. B,28.1.d. The gamma background exposure rate (UR/hr) at 1 m abovethe ground, measured with a portable Nal scintillation counter. * 4
; és ae * % oy iS 4 ie 4 %, “I Fig. B,28.1.d. The gamma background exposure rate (UR/hr) at 1 m abovethe ground, measured with a portable Nal scintillation counter. * 4