TY  - BOOK
AU  - Gay,Geri
AU  - Hembrooke,Helene
TI  - Activity-centered design: an ecological approach to designing smart tools and usable systems 
T2  - Acting with technology
SN  - 0262072483
AV  - QA76.9 .H85 G39A
PY  - 2004///
CY  - Cambridge, Mass.
PB  - MIT Press
KW  - HUMAN-COMPUTER INTERACTION
KW  - SYSTEM DESIGN
KW  - HUMAN-MACHINE SYSTEMS
KW  - DESIGN
N1  - Includes bibliographical references and index
ER  -