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- Author(s):
- Ewer, Bernard C. (Bernard Capen), 1877-1962 author
- Publication:
- New York : The Macmillan company, 1923
- Subject(s):
- Psychology, Applied
- Author(s):
- Hollingworth, Harry L. (Harry Levi), 1880-1956, author
Poffenberger, Albert T. (Albert Theodore), 1885-1977, author
- Publication:
- New York : D. Appleton and Company, 1923
- Subject(s):
- Psychology, Applied
- Author(s):
- Hollingworth, Harry L. (Harry Levi), 1880-1956, author
Poffenberger, Albert T. (Albert Theodore), 1885-1977, author
- Publication:
- New York : D. Appleton and Company, 1918
- Subject(s):
- Psychology, Applied
