(N|LEKTROTRUBY DLQ BURENIQ NEFTQNYH I GAZOWYH SKWAVIN (B/s - (NfOMENKO(B, (Nf(B.(Nn(B. s ((NmOSKWA (B:s (NgOSTOPTEHIZDAT(B,s, 1961)
Keywords: (N|LEKTROBURENIE SKWAVINs