(N|KSPLUATACIQ S^ETNO(B-(NPERFORACIONNYH MA[IN(B/s - (NrODOWA(B, (NrAHILX gILXKOWNAs; (NsKULXSKIJ(B, (NsEMEN iLXI^s; (NzASTENKER(B, (NgRIGORIJ sEMENOWI^s ((NmOSKWA (B:s (NsTATISTIKA(B,s, 1966)
Keywords: (Ns^ETNO(B-(NPERFORACIONNYE MA[INYs