000 00252nam a2200097Ic 4500
008 240520s9999 xx 000 0 und d
100 1 _aRheingold, Howard
245 1 0 _aVirtual reality /
_cHoward Rheingold
264 1 _bTouchstone Books
_c1991
942 _cBK
999 _c19899
_d19899