000 00282nam a2200121Ia 4500
003 LDD
040 _cLDD
041 _aen
245 0 _aData Communications
260 _aMcGraw-Hill Information Systems Co.
_bNew York
_c1 Jan-30 Apr,1992
362 _a21-21
_b01-Jun
942 _2ddc
_cJ
999 _c179840
_d179840