Effects of cooperative overhead projection master development
Subtitle: an experiment in use of a summer workshop to stimulate development and use of visual aids by vocational agriculture teachers
By: by Joel H. Magisos and Stanford Sleeth.
Contributors: Sleeth, Stanford Helbert, joint author, 1921-
Publisher: U.S. Department of Health, Education, and Welfare, Office of Education, Bureau of Research
Published: 1966
Place of publication: [Washington]
Language: eng
Number of pages: 46
Subjects: Agriculture -- Study and teaching -- Audio-visual aids.
Notes: Bibliography : leaf [47].