A point scale for measuring mental ability / by Robert M. Yerkes, James W. Bridges and Rose S. Hardwick.

  • Yerkes, Robert M. (Robert Mearns), 1876-1956.
Date:
1915
Catalogue details

Licence: Public Domain Mark

Credit: A point scale for measuring mental ability / by Robert M. Yerkes, James W. Bridges and Rose S. Hardwick. Source: Wellcome Collection.

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