000			003390000a22001450004500
245			_aElectronic switching, timing and pulse circuits
100			_aPettit, J.M.
100			_aMcwhorter, M.M.
250			_a2d ed.
260			_aNew York _bMcGraw Hill _c1970
300			_a289 p.
080			_a621.374 _bP4
041			_aEN
942			_cBK
999			_c94637 _d94637