(NwENTILQCIONNOE SOPROTIWLENIE GORNYH WYRABOTOK (B/s - (NkSENOFONTOWA(B, (NaNNA iWANOWNAs; (NkARPUHIN(B, (NwLADIMIR dMITRIEWI^s; (NhAREW(B, (NaLEKSEJ aKIMOWI^s; (NsKO^INSKIJ(B, (Na(B.(Na(B.s ((NmOSKWA (B;s (NlENINGRAD (B:s (NuGLETEHIZDAT(B,s, 1950)
(NbIBLIOGR(B.: (NS(B. 259-260s
Keywords: (NrUDNI^NAQ WENTILQCIQ s -- (NrAS^ETs