(NcWETA MINERALOW (B/s - (NfERSMAN(B, (NaLEKSANDR eWGENXEWI^(B.s ((NmOSKWA (B: s (NlENINGRAD (B:s (NiZD(B-(NWO aKAD(B. (NNAUK sssr(B, s, 1936)
Keywords: (NmINERALOGIQs