Abstract
References
1.
Brook
Gilbert E.
, Marine Hygiene and Sanitation , 1920 .
2.
Buer
M. C.
Health, Wealth and Population in the Early Days of the Industrial Revolution , 1926 . Bull. of Hyg. , 1927 and 1928.
3.
Shaw
T. B.
Naval Hygiene , 1929 .