(N|LEKTRI^ESTWO POD ZEMLEJ (B/s - (NtERPIGOREW(B, (NaLEKSANDR mITROFANOWI^s; (NtUROWSKAQ(B, (NpOLINA gRIGORXEWNAs ((NmOSKWA (B:s (Nb(B.(NI(B.,s, 1959)
Keywords: (NgORNAQ \LEKTROTEHNIKAs