Preparation and use of audio visual aids /
Hass, Kenneth B
Preparation and use of audio visual aids / by Kenneth B Hass - 3rd ed. - New Delhi : Prentice hall, 1964. - 381p. :
Media
Preparation and use of audio visual aids / by Kenneth B Hass - 3rd ed. - New Delhi : Prentice hall, 1964. - 381p. :
Media