000 00268nam a2200121Ia 4500
008 160921s9999 xx 000 0 und d
100 _aCARLSON A BRUCE
245 _aCOMMUNICATION SYSTEM
250 _a5th
260 _bMCGRAW HILL
_c2012
300 _a924
942 _cBK
999 _c1572
_d1572