Cost-benefit analysis : an informal introduction / E.J. Mishan. Mishan, E. J. (Edward J.), 1917- Cost effectiveness. Welfare economics. HD47.5 .M53 1975 658.1/554 19 330.1 MIC Includes bibliographical references and index. London : G. Allen & Unwin, 1975. 1975. 1975 Text xx, 454p. ; eng