Approaches and methods used in long-term social planning and policy-making; conclusions of the Seminar at Arc-et-Senans, France (3-10 May 1972) and collection of working papers submitted to the Seminar. Seminar on Methods Used in Long-term Social Planning and Policy-making, Arc-et-Senans, France, 1972. United Nations. Economic Commission for Europe. Social planning Congresses. System analysis Congresses. Social indicators Congresses. JX1977 .A2 ECE/EC.AD/3 309.2 UNA "United Nations publication. Sales no. E.73.II.E.7." At head of title: Economic Commission for Europe. Includes bibliographical references. New York, United Nations, 1973. 1973. 1973 Text iv, 274 p. eng