Preparation and use of audio-visual aids
Hass, K.B., Packer, H.Q.
Preparation and use of audio-visual aids by K.B. Haas and H.Q. Packer - 3rd edn. - New York 1955 - 382 p.
Audio Visual Aids
371.335 / H 353 P
Preparation and use of audio-visual aids by K.B. Haas and H.Q. Packer - 3rd edn. - New York 1955 - 382 p.
Audio Visual Aids
371.335 / H 353 P