TY  - BOOK
AU  - Davis,William S.
TI  - Systems analysis and design: a structured approach 
SN  - 0201102714 :
AV  - QA76.9 .S88D38
PY  - 1983///
CY  - Reading, Massachusetts
PB  - Addison-Wesley
KW  - System design
KW  - System analysis
N1  - Includes bibliographical references and index
ER  -