00325nam a2200109 a 450000500170000000800410001704100080005810000190006624500730008526400460015830000110020420260716124434.0260701s1978    ii            000 0 eng d  aeng1 aSudgen, Robert14aThe principles of practical cost benefit analysis /cSudgen, Robert. 1bOxford University PressUniversity,c1978.  a275 p.