Difficulty prediction of test items
Publisher: Bureau of Publications, Teachers College, Columbia Univ.
Published: 1948
Place of publication: New York
Language: eng
Number of pages: 55
Subjects: Educational tests and measurements
Notes: Pub. also as Teachers College, Columbia University, Contributions to education, no. 941.

Vita.

Thesis--Columbia Univ.

Bibliography: p. 54-55.