Guide to practical project appraisal : Social benefit - cost analysis in developing countries

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• Guide to practical project appraisal: social benefit-cost analysis in developing
  著者:: United nations
  出版事項: (1978)
• Guide to practical project appraisal: social benefit-cost analysis in deveoping countries
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• Guide to practical project appraisal: social benefit-cost analysis in developing countries
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• Guide to practical project appraisal: Social benefit-cost analysis in developing countries
  著者:: United Nations Industrial Development Organization
  出版事項: (1978)
• Guide to practical project appraisal : social benefit - cost analysis in developing countries /
  著者:: United Nations
  出版事項: (1978)