000 00307pam a2200121a 44500
008 140414b2007 xxu||||| |||| 00| 0 eng d
100 _aR P SINGH
245 _aCOMMUNICATION SYSTEMS
_c
250 _aSECOND Ed.
260 _aNEW YORK
_bMCGRAW HILL COMPANIES, INC
_c2007
700 _aSD SAPRE
906 _a49669
999 _c45195
_d45195