000 00260pam a2200097a 44500
008 140414b1986 xxu||||| |||| 00| 0 eng d
100 _aA BRUCE CARLSON
245 _aCOMMUNICATION SYSTEMS
_c
260 _aNEW DELHI
_bMcGraw-Hill book company
_c1986
906 _a49524
999 _c45063
_d45063