000 00285 a2200121 4500
082 _a621.3747
_bT235t
245 1 _aTYPICAL OSCILLOSCOPE CIRCUITRY
260 _aPortland
_bOregon
_c1961
300 _a1 v.
650 _aCathode Ray Oscillograph
964 _gCIRC
997 _a28605 s C
999 _c452707
_d452707