000 00291nam a2200121Ia 4500
008 190516s9999 xx 000 0 und d
100 _aLEACH (DONALD P) & OTHERS
245 0 _aDIGITAL PRINCIPLES AND APPLICATIONS
250 _a7TH
260 _c2011
_bMC GRAW
300 _a682
942 _cBK
999 _c17392
_d17392