000 00230 a2200097 4500
001 53021
100 _aNicbols E A
245 _aData Communications for Microcomputers
260 _aLondon
_bMcGraw-Hill
_c
090 _c33339
_d33339
942 _aNUST-CAE
_cM
_c25935
999 _c288094
_d288094