TY  - BOOK
AU  - Nicholls,Derek
TI  - Introducing SSADM the NCC guide
SN  - 0850126282
U1  - QA/76.6 
PY  - 1987///
CY  - Manchester
PB  - The National Computing Centre Ltd
KW  - Electronic digital computers -- Programming.
KW  - Structural Programming
KW  - System analysis.
ER  -