References
Footnotes
- Grebenik , E. 1940 . Some aspects of population in Bristol . J Roy. Statist. Soc. ,
- Hajnal , J. 1947 . Some aspects of recent trends in marriage in England and Wales . Population Studies , I June
- Innes , J. W. 1938 . Class Fertility Trends in England and Wales, 1876-1934 97 – 97 . Princeton
- 1911 . Census of England and Wales Vol. XIII , lxxxix – lxxxix . Part II