The resemblance of siblings in intelligence and achievement
By: by Gertrude Howell Hildreth ...
Published: 1925
Language: eng
Number of pages: 65
Subjects: Heredity; Psychological tests
Notes: Vita.

Published also as Teachers College, Columbia University, Contributions to education, no. 186.

Thesis (PH. D.)--Columbia University, 1925.

Bibliography: p. 64-65.