00399    a2200121   4500020001500000082001700015100001700032245011000049260003500159300002400194650002500218650003400243  a817808290x  a621.382bDOR  aDornan, Andy  aThe essential guide to wireless communications applicationsbfrom cellular systems to wap and M -commerce  aNew DelhibPearsonc2001g2001  axviii, 315p.c24cm.  aIEEE 802.11 STANDERD  aWIRELESS COMMUNICATION SYSTEM