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040			_aMAIN
041			_aEnglish
082			_a621.3815 _bPET
100			_aPettit, Joseph M. and Mcwhorter, Malcolm M.
245			_aElectronic switching, timing, and pulse circuits
250			_a2nd ed.
260			_aLondon _bMcgraw Hill Book Company _c1970
300			_axiv,289p.
650			_aElectronic circuit
650			_aElectronics
650			_aEngineering
942			_cBK
999			_c27550 _d27550