000 00309nam a2200133Ia 4500
008 240115s9999 xx 000 0 und d
050 _aQA76.5.O77 1968
100 _aOrr, William D.
245 0 _aConversational computer
260 _aNew York
260 _bJohn wiley and sons
260 _c1968
942 _aBK
999 _c915
_d915