Guide to practical project appraisal : social benefit-cost analysis in developing countries.
- New York : United Nations, 1978.
- viii, 121 p. : graphs ; 24 cm.
- Project formulation and evaluation series ; no. 3 .
- [Document - United Nations] ; ID/SER.H/3 .
- United Nations. Document ; ID/SER.H/3. .
"United Nations publication. Sales no. E.78.II.B.3." "Written by John R. Hansen." At head of title: United Nations Industrial Development Organization, Vienna. Includes index.