(NsTROMATOPORATY I BIOSTRATIGRAFIQ NIVNEGO PALEOZOQ mONGOLII (B/s - (NbOLX[AKOWA(B, (Nl(B.(Nn(B.s; (NuLITINA(B, (Nl(B.(Nm(B.s; (NbARSBOLD(B, (Nr(B.s ((NmOSKWA (B:s (NnAUKA(B,s, 1985)
Keywords: (NbIOSTRATIGRAFIQs; (NsTROMATOPORATYs