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- Author(s):
- Hough, John Stockton, 1845-1900, author
- Publication:
- New York : William Wood & Company, 1886
- Subject(s):
- Birth Intervals
Sex Factors
Fetus
- Author(s):
- Hough, John Stockton, 1845-1900, author
- Publication:
- [Philadelphia?] : [publisher not identified], [1873?]
- Subject(s):
- Vital Statistics
Philadelphia