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    Author: CRAWFORD (John Raymond)

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    CRAWFORD (John Raymond). Age and progress factors Intest norms. See IOWA. UnIversIty of Iowa. UnIversIty of Iowa StudIes. StudIes In EducatIon. Vol. 9. 4. CRAWFRD (J.R.) • Research studIes In educatIonal • measurement. I., etc. Iowa, [1934].

    Card ID: 55