Search Results - Helmstadter, G. C. (Gerald Carl)

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  1. 1
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    Principles of psychological measurement. by Helmstadter, G. C. (Gerald Carl)

    Published 1964
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  2. 2
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    Research concepts in human behavior: education, psychology, sociology by Helmstadter, G. C. (Gerald Carl)

    Published 1970
    Full Text (via Internet Archive)
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