000 00249nam a2200109Ia 4500
020 _a978-0070151529
082 _a621.382
100 _aR.P, SINGH, and SAPRE
245 _aCOMMUNICATION SYSTEM ANALOGE AND DIGITAL 2ND EDI
260 _c2008
942 _cBK
999 _c886
_d886