000 00288nam a2200121Ia 4500
008 230222s9999 xx 000 0 und d
082 _a621.3813
100 _aJohn D Sherrick
245 0 _aConcepts in systems and signals
250 _a2
260 _bPearson Education
_c2005
942 _cBK
999 _c7047
_d7047