000 00295nam a2200121Ia 4500
008 220201s2007 xx 000 0 eng d
082 _a621.38195
_bGUP
100 _aGupta, Reshy, etc
245 0 _aSwitching theory
260 _aNew Delhi
_bSatya prakashan
_c2007
300 _a480
942 _2ddc
999 _c29051
_d29051