(N|LEMENTY(B-(NMETALLY POBO^NYH PODGRUPP PERIODI^ESKOJ SISTEMY (B/ s - (NaGAFO[IN(B, (NnIKOLAJ pETROWI^s; (NkOTLQROWA(B, (No(B. (Ns(B.s ((NmOSKWA (B:s (Nb(B. (NI(B.,s, 1954)
Keywords: (NmETALLY (B- (Nu^EBNIKI I POSOBIQs