The basis of pertinence
Subtitle: a study of the test performance of aments, dements and normal children at the same mental age
By: by Mary Marjorie Bolles ...
Series: Archives of psychology -- no. 212
Published: 1937
Place of publication: New York
Language: eng
Number of pages: 51
Subjects: Pathological Psychology
Notes: Issued also as thesis (PH. D.) Columbia university.

Bibliography: p. 49-51.