000 00333pam a2200133a 44500
008 160422s9999 xx 000 0 und d
082 _a006 WOO
100 _aWoolley, Benjamin.
245 _aVirtual worlds.
260 _aLondon
_b Penguin books
_c1993
300 _a274p.
500 _aIncludes index.
650 _aComputer Science
999 _c78844
_d78844