Ancien élève l’Ecole Polytechnique. Dr h.c., Universities, Geneva, Brussels, Liège, Utrecht, Montreal, Palermo.
United Nations Commission Population. Conseil Economics et Social, 1947-1974. Professor, Collège de France, 1959-1970.
Retired, since 1972.
Short-term economic fluctuations and demographic changes in the world. The effects of technical change on total employment. The struggle for clarity in statistical information bearing on matters of economic policy.