References
Footnotes
- Hajnal , J. 1964 . “ European marriage patterns in perspective ” . In Population in History Edited by: Glass , D. V. and Eversley , D. E. C. London in, (Eds.)
- See Hajnal J. Age at marriage and proportions marrying Population Studies 1953 7 2 111 136 November
- Carlsson , G. The Scandinavian Demographic Society . The Second Scandinavian Demographic Symposium , pp. 49 – 64 . Stockholm In
- Henry , Louis . 1961 . Some data on natural fertility . Eugenics Quarterly , 8 : 81 – 91 .