Gay, Geri <br/><br/>
Activity-centered design :  an ecological approach to designing smart tools and usable systems / 
Geri Gay and Helene Hembrooke 
 - Cambridge, Mass. :  MIT Press,  c2004 
 - 111 p. :  ill. 
 - Acting with technology .
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0262072483 
<br/><br/><label>Subjects--Topical Terms: </label><br/>HUMAN-COMPUTER INTERACTION<br/>SYSTEM DESIGN<br/>HUMAN-MACHINE SYSTEMS--DESIGN
<br/><br/><label>LC Class. No.: </label>QA76.9 .H85  / G39A