3

The Sex Ratio of Human Births Related to Maternal Age

Year:
1950
Language:
english
File:
PDF, 1.30 MB
english, 1950
5

The Care of the Chronic Sick: I. Medical and Nursing Requirements

Year:
1949
Language:
english
File:
PDF, 2.32 MB
english, 1949
6

A Note on Secular Changes in the Human Sex Ratio at Birth

Year:
1951
Language:
english
File:
PDF, 566 KB
english, 1951
7

The Care of the Chronic Sick: II. Social and Demographic Data

Year:
1950
Language:
english
File:
PDF, 1.17 MB
english, 1950