(NnEFTQNYE DOROVNYE BITUMY (B/s - (NmIHAJLOW(B, (NwALENTIN wASILXEWI^s ((NmOSKWA (B:s (NdORIZDAT(B, s, 1949)
(NbIBLIOGR(B.: (NS(B. 183 s
Keywords: (NbITUMINOZNYE MATERIALYs; (NbITUMY NEFTQNYEs; (NbITUMNYE MATERIALY(B, (NDOROVNYEs