000 00266nam a2200109Ia 4500
008 220201s1999 xx 000 0 eng d
100 _aBLACK, U.D.
245 0 _aDATA COMMUNICATION & DISTRIBUTED NETWORK
260 _aDELHI
_bPHI
_c1999
300 _a426
942 _2ddc
999 _c67735
_d67735