Gay, Geri <br/><br/>
Activity centered design : an ecological approach to designing smart tools and usable systems 

 - England  MIT Press  2004 
 - xxi, 111p.   
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>262072483 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Activity centered design<br/>Context-based design<br/>Human-computer interaction<br/>Human-machine systems -- Design<br/>System design