TY  - GEN
AU  - Duncan, Joyce
AU  - Walker, Alexandria
AU  - Rackley, Lesley
TI  - SSADM in practice: a version 4 text
SN  - 0333469992
U1  - 004.21 
PY  - 1995///
CY  - Hampshire
PB  - Mackillan press
KW  - Data processing
ER  -