000 00273nam a2200121Ia 4500
020 _a8120328469
082 _a005.71 GUP
100 _aBLACK, UYLESS D.
245 _aDATA COMMUNICATION AND DISTRIBUTION NETWORKS
260 _bPHI
_c2006
300 _a800
942 _2ddc
_cBB
999 _c75507
_d75507