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  1. By: National Research Council (U.S.). Psychology committee. - Yerkes, Robert Mearns,
    Publication info: Washington, D.C, National Research Council, 1919
    Holding Institution: University of California Libraries
    Subjects: Ability  Intelligence tests  Psychology, Applied  Testing  
  2. By: Huntington, Ellsworth,
    Publication info: New York, J. Wiley & sons, inc, 1938
    Holding Institution: Wellcome Library
    Subjects: Ability  Aptitude  Electronic books  Physiological effect  Population  Psychological aspects  Reproduction  Seasons  statistics & numerical data  Weather