(NsTROITELXNYE NORMY I PRAWILA NA GORNOPROHOD^ESKIE RABOTY (B/s - (NsOWET mINISTROW sssr(B.s (NgOSUDARSTWENNYJ KOMITET PO DELAM STROITELXSTWAs ((NmOSKWA (B:s (NgOSSTROJIZDAT(B,s, 1959)
(N~(B. 4 (1959, 253 (NS(B.) :s (NsMETNYE NORMYs
Keywords: (NsTROITELXNYE NORMY I PRAWILAs; (NpROHODKA GORNYH WYRABOTOKs