Improvement and the distribution of practice.
By: New York, Teachers College, Columbia University, 1919.
Publisher: AMS Press; Ams Pr Inc
Published: 1972
Place of publication: [New York
Language: eng
Number of pages: 72
Subjects: Educational tests and measurements.
Notes: Original ed. issued as no. 97 of Teachers College, Columbia University. Contributions to education.
Originally presented as the author's thesis, Columbia.