TY  - BOOK
AU  - Shlaer, Sally.
AU  - Mellor, Stephen J.
TI  - Object-oriented systems analysis : modeling the world in data
T2  - Yourdon press computing series
SN  - 013629023X
U1  - 005.1 
PY  - 1988///
CY  - Englewood Cliffs
PB  - Yourdon Press
ER  -