000 00287nam a2200121Ia 4500
003 LDD
040 _cLDD
041 _aen
245 0 _aCommunications of the ACM
260 _aAssociation for Computing Machinery
_bNewyork
_c1 Jul-31 Dec,1998
362 _a41-41
_b07-Dec
942 _2ddc
_cJ
999 _c188753
_d188753