000 00318nam a2200121Ia 4500
008 211209s1987 xx 000 0 und d
041 _aeng
082 _a004.6 N87 BLA
100 _aBLACK, UYLESS D
245 _aDATA COMMUNICATIONS AND DISTRIBUTED NETWORKS
260 _aNEW YORK
_bPRENTICE HALL
_c1987
300 _a466
999 _c24262
_d24262