design of instructional equipment
Subtitle: two views
By: by Humboldt W. Leverenz and Malcolm G. Townsley; a report prepared for the Technological Development Project of the National Education Association of the United States.
Contributors: Townsley, Malcolm G.; National Education Association of the United States. Technological Development Project.
Published: 1962
Place of publication: Washington
Language: eng
Number of pages: 51
Subjects: Teaching -- Aids and devices