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OF SUBNORMALITY

BY

J. E. WALLACE WALLIN
Director of the Psycho-Educational Clinic, Board of
Education, St. Louis; Author of “Experimental
Studies of Mental Defectives,” “The Mental

Health of the School Child,” etc., etc.

WITH AN INTRODUCTION BY

JOHN W. WITHERS, PH.D.
Superintendent of Public Schools

in the City of St. Louis

Yonkers-on-Hudson, New York
WORLD BOOK COMPANY

1917

;(ر)

Copyright, 1917, by World Book Company

All rights reserved

BIOLOGY
LIBRARY

WPST

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