TY - BOOK AU - Hansen,John R. TI - Guide to practical project appraisal: social benefit-cost analysis in developing countries T2 - [Document - United Nations] ; ID/SER.H/3 U1 - 338 PY - 1978/// CY - New York PB - United Nations KW - Economic development projects KW - Evaluation N1 - "Written by John R. Hansen."; At head of title: United Nations Industrial Development Organization, Vienna; "United Nations publication. Sales no. E.78.II.B.3."; Includes index; Bibliography: p. 115-117 ER -