000 00282nam a2200121Ia 4500
008 220201s1968 xx 000 0 eng d
082 _a621.384132
100 _aSmith, D. A.
245 0 _aABC's of Vaccum Tubes
260 _bEngland: Foulsham
_c1968
300 _a128
942 _2ddc
999 _c80527
_d80527