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- Author(s):
- Wood, E. Allen, author
- Publication:
- Pittsburgh : Herald Printing Co., [1886?]
- Subject(s):
- Heredity
Aptitude
Eugenics
- Author(s):
- Siemens, Hermann Werner, 1891-1969, author
- Publication:
- New York : Appleton, 1924
- Subject(s):
- Heredity
Eugenics