1 Introduction / Everett M. Kassalow. 2 Social factors in development: an overview with special emphasis on social security / H: W. Singer. 3 The role of social security as seen by the development planner / Jan Tinbergen, Jan Bouumeesters. 4 A quantitative approach to social security and economic development / Walter Galenson. 5 Programming social security as part of economic development the problem of opportunity cost / Benjamin Higgins. 6 The investmens of social security reserves and development problem: the Philippines as a case history / Robert J. Lampman. 7 Social security and income redistribution: comparative experience / Félix Paukert. 8 Social security and industrialization: the western experience,with possible lesson for the les developed nations / Gaston V. Riminger. 9 Social security and development: the latin american experience / Marshall Wolfe. 10 Social security and economic development: the evaluation of program needs at successive stages of development / George F. Robrlich. 11 The relevance and the validity of social insurance in developmnent economics / Sanford Cohen. 12 Health policies and investments, and economic development / Brian Abel-Smith. 13 Social security and development planning: some issues / Paul Fisher.