ON THE QUESTION OF BIRTH CONTROL IN SOME OF ITS STATISTICAL ASPECTS.

The Lancet - Tập 204 - Trang 925-928 - 1924
John Brownlee

Tài liệu tham khảo

Greenwood, 1912, An Examination of Some Factors Influencing the Rate of Infantile Mortality, Journal of Hygiene, xii, 10.1017/S0022172400017009 R. Pearl, S.L. Parker, On the Influence of Density of Population upon the Rate or Reproduction of Drosphila vol. viii, National Academy of Sciences (No. 7 pp. 212-219). 1922, THE LANCET, ii, 223