000 00400nam a2200169Ia 4500
008 180424s9999 xx 000 0 und d
084 _a621.381 51 S2
100 _a"Seely, Samuel"
245 0 _aElectron-Tube Circuits
250 _a\\195802ENGGPCX
260 _aT M h
260 _b1958
260 _cNew Delhi
300 _ax+659p
500 _aincludes index and biblioraphy
942 _cBK
999 _c31624
_d31624