TY  - GEN
AU  - Yeates, Don.
AU  - Shields, Maura.
AU  - Helmy, David.
TI  - System Analysis and Design:  
SN  - 0273600664
U1  - 004.21 
PY  - 1994///
CY  - London
PB  - Pitman Publishing
KW  - Comptuer Science
ER  -