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The effect of time upon variability. New York, Bureau of Publications, Teachers College, Columbia University, 1926.


[New York, AMS Press, 1972 1926].
ISBN 0404552161

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American
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Subjects Psychological tests.
Variability (Psychometrics)
Series Contributions to education, no. 216.
Description v, 56 p. 22 cm.
Notes Originally presented as author's thesis, Columbia.
Reprint of the 1926 ed., issued in series: Teachers College, Columbia University. Contributions to education, no. 216.
Bibliography: p. 56.
Network Numbers (OCoLC)00379024
(OCoLC)379024
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