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Population Dynamics
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14
New England
4
Abortion, Criminal
1
Argentina
1
Doubleday, Thomas, 1790-1870.
1
Epidemics
1
Fertility
1
Greek World
1
Health Status
1
Physical Fitness
1
Population
1
Population Control
1
Public Health
1
Roman World
1
Temperament
1
Vital Statistics
1