TY  - BOOK
AU  - Beyer,Hugh
AU  - Holtzblatt,Karen
TI  - Contextual design: defining customer-centered systems 
SN  - 1558604111 (pbk.)
PY  - 1998///
CY  - San Francisco
PB  - Morgan Kaufmann
KW  - System design
KW  - System analysis
N1  - Includes index; Includes bibliographical references
ER  -