TY  - BOOK
TI  - Guide to Practical Project Appraisal : : Social Benefit-Cost Analysis in Developing Countries / 
SN  - E.78.II.B.3
U1  - Project evaluation – Cost-benefit analysis – Development planning 
PY  - 1978///
CY  - New York : 
PB  - United Nations ، 
KW  - 338.9
ER  -