TY  - BOOK
AU  - Wellman, Frank.
TI  - Software costing : an objective approach to estimating and controlling the cost of computer software /by Frank Wellman
T2  - BCS practitioner series
SN  - 0138184364
U1  - 005.30681 
PY  - 1992///
CY  - New York
PB  - Prentice-Hall
ER  -