000 00267nam a2200109Ia 4500
008 220201s1997 xx 000 0 eng d
100 _aBLACK, U.D.
245 0 _aDATA COMMUNICATION & DISTRIBUTED NETWORKS
260 _aDELHI
_bPHI
_c1997
300 _a426
942 _2ddc
999 _c67720
_d67720