000 00264nam a2200121Ia 4500
008 241124s9999 xx 000 0 und d
100 _aPadmanabhan;Ananthi
245 2 _aA Textbook on Signals & System
260 _b-
260 _c0
300 _a271
942 _cBK
999 _c7113
_d7113