The health of nations :
Sagan, Leonard A.
The health of nations : true causes of sickness and well-being / Leonard A. Sagan. - New York : Basic Books, 1987. - 233 p.
0465028934
Health.
Social environment.
Life expectancy.
WA 30
The health of nations : true causes of sickness and well-being / Leonard A. Sagan. - New York : Basic Books, 1987. - 233 p.
0465028934
Health.
Social environment.
Life expectancy.
WA 30