TY  - BOOK
AU  - Ward, William A.
AU  - D'Silva, Emmanuel H. 
AU  - Deren, Barry J. 
TI  - The economics of project analysis: A practitioner's guide 
SN  - 0821317512
U1  - 338.900684 
PY  - 1991///
CY  - Washington, DC
PB  - The World Bank
KW  - Economics
ER  -