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Smaller classes or larger; a study of the relation of class-size to the efficiency of teaching.

By Stevenson, P. R..
Bloomington, Ill., Public School Pub. Co., 1923 .
127 p. , Issued also as thesis, Columbia University. 24 cm..

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The master hand; a study of the origin and meaning of right and left sidedness and its relation to personality and language ...

By Blau, Abram,.
New York, 1946 .
xiv, 206 p. 26 cm..

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Studies in sibling rivalry

By Levy, David M..
[New York] The American orthopsychiatric association, 1937 .
3 p. l., 5-96 p. , Studies begun at the Institute for child guidance; reprinted from articles published in the American journal of orthopsychiatry. cf. p. [5]

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