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- Author(s):
- Keen, William W. (William Williams), 1837-1932
- Publication:
- Philadelphia : [publisher not identified], 1910
- Subject(s):
- Physicians
Philadelphia
Gross, Samuel D. (Samuel David), 1805-1884.
- Author(s):
- Knight, Augustus S. (Augustus Smith), 1864-1948, author
- Publication:
- [New York?] : [Metropolitan Life Insurance Company?], 1921
- Subject(s):
- Health Status Indicators
Insurance, Life -- economics
Mortality
Risk Factors
United States