(NnEFELIN KAK UDOBRENIE (B/ s - (NmOL^ANOW(B, (Ns(B.(Np(B. s; (NfERSMAN(B, (Na(B.(Ne(B. s; (NpRQNI[NIKOW(B, (Nd(B.(Nn(B. s ((NlENINGRAD (B: s (NoNTI(B. (NhIMTEORET(B, s, 1936)
Keywords: (NmINERALOGIQs; (NnEFELIN (B- (NuDOBRENIQs