(NiZMEN^IWYJ LIK zEMLI (B/s - (NmALHASQN(B, (N|DUARD gURGENOWI^s; (NrUDI^(B, (NkIRILL nIKIFOROWI^s ((NmOSKWA (B:s (NnEDRA(B,s, 1987)
Keywords: (NgEOLOGI^ESKIE NAUKIs; (NzEMLQs