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- Author(s):
- Billings, John S. (John Shaw), 1838-1913, author
- Publication:
- [Meadville, Pa.?] : [publisher not identified], [1893?]
- Subject(s):
- Population
Population Dynamics
- Author(s):
- Johnson, Joseph Taber, 1846-1921, author
- Publication:
- Baltimore : Journal Publishing Company, 1890
- Subject(s):
- Abortion, Criminal
Population Dynamics