Economic factors in population growth : proceedings of a conference held by the International Economic Association at Valescure, France / edited by Ansley J. Coale. Coale, Ansley J., ed. International Economic Association. Centre national de la recherche scientifique (France) Population Congresses. Economic development Congresses. HB849 .E26 1976b 301.32 19 COE Distributed in the United States by Halsted Press, a division of John Wiley & Sons, New York. "Conference held in partnership with the French Centre National de la Recherche Scientifique." Includes bibliographies and index. London : Macmillan, 1976. 1976. 1976 Text xviii, 600 p. : eng