000 00330nam a2200145Ia 4500
100 _aShay/William A
250 _a3
942 _cBK
654 _adatacommunication
245 _aUnderstanding Datacommunications and networks
260 _bThomson/Brooks
_c2004
082 _a621.382
_bSHA
300 _a766
546 _aENGLISH
999 _c21805
_d21805