Mental efficiency in senescence
By: by Jeanne G. Gilbert ...
Published: 1935
Place of publication: New York
Language: eng
Number of pages: 60
Subjects: Old age.; Ability, Influence of age on.
Notes: Bibliography: p. 43-44.
Thesis (Ph. D.)--Columbia university, 1935.
Vita.
Published also as Archives of psychology, no. 188.