TY  - BOOK
AU  - Davis,Alan M.
TI  - Software requirements : : objects, functions and states / 
SN  - 0135621747   
AV  - QA76.76. D47 D38 1993  
PY  - 0000///25 cm
CY  - Englewood Cliffs,NJ
PB  - PTR Prentice Hall, 
KW  - Computer software
KW  - Development
N1  - Includes bibliographical reference and index
ER  -