Demography / Peter R. Cox. Addendum to demography, developments during 1949-54. Cox, Peter R. Demography. Population. HB881 .C78 312 COD With: Addendum to demography, developments during 1949-54 / Peter R. Cox. Cambridge : Published for the Institute of Actuaries and the Faculty of Actuaries at the University Press, 1955. Includes bibliographies and index. Cambridge : Published for the Institute of Actuaries and the Faculty of Actuaries at the University Press, 1950. 1950. 1950 Text x, 326 p., [3] folded leaves of plates : eng