00418cam a2200121ua 4500003000400000008004100004041000800045082002000053245009600073260006000169300001200229500005500241OSt240223b        |||||||| |||| 00| 0 eng d  aeng  a658.404bUNI/GU  aGuide to Practical Project Appraisal: Social Benefit-Cost Analysis in Developing Countries   aNew Delhi : bOxford & IBH Publishing company , c1978.  a121 ; .  aUnited Nations Industrial Development Organization