000			00365nam a2200145Ia 4500
005			20241210153324.0
008			231221s9999 xx 000 0 und d
020			_a9780131018167
082			_a794.8 BAR;1 R
100			_aBartle, Richard A.
245		0	_aDesigning virtual worlds
260			_c2004 _bNew Raiders _aBerkeley
300			_axxi, 741
942			_cAR
999			_c235334 _d235334