TY  - BOOK
AU  - Longworth,Gordon
TI  - Getting the system you want : a user's guide to SSADM
SN  - 0850126290
U1  - QA/76.9.S84 
PY  - 1989///
CY  - Manchester
PB  - The National Computing Centre Ltd
KW  - Electronic data processing -- Structured techniques.
KW  - System analysis.
KW  - System design.
ER  -