Brown,, Andrew Wilson, 1890- The unevenness of the abilities of dull and of bright children / by Andrew Wilson Brown. - AMS Press : New York, 1972. - 112 p. : ill. ; 22 cm. - Teachers College, Columbia University. Contributions to education n. 220. . p. 110-112. ISBN: 040455220X Subjects--Topical Terms: Ability.Child study.Intelligence levels.