Thesis (Ph. D.)--Columbia University, 1916; Bibliography: p. 69-70
Bibliographies at end of chapters
Published also as thesis (PH. D.) John Hopkins university, 1916; Bibliography: p. 60-62
Contains bibliographies
Thesis (Ph. D.)--Johns Hopkins University, 1924; Includes bibliographical references (p. 143)
Child psychology; Exceptional children; Children with disabilities
Bibliography: p. 81-82
Thesis (Ph.D)--University of Pennsylvania, 1912