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1. Audio visual materials

by Wittich, Walter Arno; Schuller, Charles Francis.

Edition: 2nd ed.Publisher: New York Harper & Brothers 1957Availability: Items available for loan: Central Library, BUET [371.33/WIT/1957] (1).

2. Preparation and use of audio-visual aids

by Haas, Kenneth B; Packer, Harry Q.

Edition: 3rd ed.Publisher: New Delhi Prentice-Hall of India 1964Availability: Items available for reference: Central Library, BUET [371.33/HAA/1964] (1 ).