TY  - BOOK
AU  - Powell James E.
TI  - Designing  user interfaces
AV  - QA 76.9 .U8P68 1991
U1  - 004.6 20
PY  - 1991///
CY  - New Delhi.
PB  - Galgotia publications
KW  - Human--computer interaction
KW  - User interfaces (Computer systems)
KW  - System design
N1  - Includes bibliographical references and index
ER  -