Mann,Patrick C Saunders,Robert J WarFord,Jeremy J Alternative Concepts of Marginal Cost for Public Utility Pricing: Problems of Application in the Water Supply Sector / Robert J.Saunders, Jeremy J.WarFord and Patrick C.Mann - Washington,D.C World Bank 1977 - 56p. - World Bank Staff Working Papers . Subjects--Topical Terms: Pricing - Water SupplyWater Suply