Opportunities for the preparation of teachers in the use of visual aids in instruction, by Katherine M. Cook, Chief, Division of Special Problems, and Florence E. Reynolds ... Federal Security Agency, Paul V. McNutt, Administrator. U.S. Office of Education, John W. Studebaker, Commissioner. (United States. Office of Education. Pamphlet no. 89)
Opportunities for the preparation of teachers in the use of visual aids in instruction, by Katherine M. Cook, Chief, Division of Special Problems, and Florence E. Reynolds ... Federal Security Agency, Paul V. McNutt, Administrator. U.S. Office of Education, John W. Studebaker, Commissioner.
(United States. Office of Education. Pamphlet no. 89)