000 00297nam a2200109Ia 4500
999 _c20794
_d20794
020 _a0130920401
100 _aWilliam J Beyda
245 _aBasic Data Communications: A Comprehensive Overview
260 _c1989
_bPRENTICE HALL (INSTRUCTIONS EDITION)
_aNew Jersey
300 _aix+268
942 _cREF