HIPPOCRATES. On Ancient Medicine, No. 20. (Works. Sydenham Society translation 849, p. 175.)
2.
HIPPOCRATES. Epidemics. Book IV., No. 25.
3.
XENOPHON. Oeconomicus. (MacMillan, 1897, p. 213.)
4.
RENÉ SAND. The Advance to Social Medicine, p. 303.
5.
RAMAZZINI. De morbis artificium diatriba (trans. History of Medicine Series, University of Chicago Press, 1940).
6.
Ibid., Chap V, p. 57.
7.
Public Health in the World To-day. (Harvard University Press, 1949, p. 164.)
8.
Titmuss, R.M.Brit. J. Sociol., 2, 183, 1951.
9.
Committee Reports of the Royal College of Physicians. December, 1942-April, 1947. Second Interim Report of Social and Preventive Medicine Committee on Industrial Medicine, p. 23.