000			00471nam a2200145Ia 4500
008			211224s9999 xx 000 0 und d
020			_a9780262072489
082			_a004.019 GAY
100			_aGay, Geri
245		0	_aActivity-centered design : an ecological approach to designing smart tools and usable systems
260			_aCambridge, MA: _bMIT Press, _c2004
300			_axxi, 111 p. : ill. ; 23 cm
650			_aHuman-computer interaction
700			_aHembrooke, Helene
999			_c10353 _d10353