000 00283nam a2200121 a 4500
003 EIA
001 10124
942 _02
_2ddc
_cBK
245 _aModern electronic communication. - 9 ed.
260 _cc2008
008 141112s2008 ck r 000 u spa d
082 _a621.382
_bB368
_c9ed
999 _c10087
_d10087