Measuring efficiency in supervision and teaching
By: by Lelah Mae Crabbs ...
Publisher: Teachers college, Columbia university
Published: 1925
Place of publication: New York city
Language: eng
Number of pages: 99
Subjects: Teaching; Educational tests and measurements
Notes: Vita.

Published also as Teachers college, Columbia university, Contributions to education, no. 175.

Thesis (Ph. D.)--Columbia university, 1925.

"References and bibliography": p. 98.