000 00269nam a2200121Ia 4500
008 161121s9999 xx 000 0 und d
100 _aACKERMANN
245 0 _aLearning to use the World Wide Web
260 _cBPB Pub.
365 _b0
650 _aNIL
942 _cBK
999 _c102757
_d102757