Hansen, J. R. (1986). Guide to practical project appraisal: Social benefit-cost analysis in developing countries. United Nations Industrial Development Organization.
Chicago Style (17th ed.) CitationHansen, John R. Guide to Practical Project Appraisal: Social Benefit-cost Analysis in Developing Countries. Vienna: United Nations Industrial Development Organization, 1986.
ציטוט MLAHansen, John R. Guide to Practical Project Appraisal: Social Benefit-cost Analysis in Developing Countries. United Nations Industrial Development Organization, 1986.
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