000 00249nam a2200109Ia 4500
008 220201s2000 xx 000 0 eng d
100 _aDERFLER, F.J.
245 0 _aPRACTICAL NET WORKING
260 _aDELHI
_bPHI
_c2000
300 _a543
942 _2ddc
999 _c68174
_d68174