000 00298nam a22001337a 4500
008 170721b xxu||||| |||| 00| 0 eng d
020 _a0030021480
041 _aeng
080 _a004
100 _a28
101 _aSHKI
245 _aDATA COMMUNICATIONS FUNDAMENTALS
_cMILES, J
942 _2udc
_cBK
999 _c21710
_d21710