(NwOPROSY TEORII PONQTIQ (B/s - (N~UPAHIN(B, (NiWAN qKOWLEWI^s; (NlENINGRADSKIJ GOSUDARSTWENNYJ UNIWERSITET IM(B. (Na(B.(Na(B. (NvDANOWAs ((NlENINGRAD (B:s (NiZD(B-(NWO lENINGR(B. (NUN(B-(NTA(B,s, 1961)
Keywords: (NlOGIKAs