(NgAMMA(B-(NIZLU^ENIE RADIOAKTIWNYH IZOTOPOW I PRODUKTOW DELENIQs (NTEORIQ I TABLICYs - (NgUSEW(B,(Nn(B. (Ng(B.s (NnIKOLAJ gRIGORXEWI^s; (NmA[KOWI^(B,(Nw(B. (Np(B.s; (NoBWINCEW(B,(Ng(B. (Nw(B.s ((Nm(B.s (NfIZMATGIZs, 1958)