000			00488nam a2200145Ia 4500
008			211224s9999 xx 000 0 und d
020			_a9780521448680
082			_a006.3 AND
100			_aAndersen, P. B
245		2	_aA theory of computer semiotics : semiotic approaches to construction and assessment of computer systems
250			_aUpdated ed
260			_aCambridge: _bCambridge Univeristy Press, _c1997
300			_avii, 448 p. : ill. ; 26 cm
650			_aHuman-computer interaction
999			_c8294 _d8294