TY  - BOOK
AU  - Sommerville,I.
TI  - Software engineering
SN  - 020113795X
AV  - DUCE QA76.6.S645 
PY  - 1982///
CY  - London
PB  - Addison-Wesley
KW  - Software engineering
N1  - Includes index; Bibliography: p. 272-281
ER  -