Dale, Edgar.
Audiovisual methods in teaching. - 3rd ed - New York, US : Dryden Press, 1969. - 719 p.
03-073540-9
Audio visual education.
371.33 DAL.
Audiovisual methods in teaching. - 3rd ed - New York, US : Dryden Press, 1969. - 719 p.
03-073540-9
Audio visual education.
371.33 DAL.