000 00262nam a2200109Ia 4500
008 190516s9999 xx 000 0 und d
100 _aCHAPPELL LAURA
245 0 _aCISCO INTERNETWORK TROUBLESHOOTING
260 _c2000
_bTECHMEDIA
300 _a604
942 _cREF
999 _c18871
_d18871