000 00300nam a2200121Ia 4500
008 220201s2010 xx 000 0 eng d
082 _a621.381
_bKHA
100 _aKhan, Imran Ullah
245 0 _aTextbook of signals & systems
260 _aDelhi
_bACME Learning
_c2010
300 _a315
942 _2ddc
999 _c37765
_d37765