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| Формат: | Книга |
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| Мова: | Англійська |
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| era | |
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| format | Book |
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| geographic | |
| id | b7eccd22-666e-46d2-a2b9-be8bdc6aba1d |
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| language | eng |
| physical | xiv, 385 pages :illustrations ;24 cm |
| publication | – publisher: McGrawHill book company inc dateOfPublication: 1940 |
| publishDate | 1940 |
| subjects | |
| title | Audio-visual aids to instruction / by Harry C. McKown...and Alvin B. Roberts. |
| topic | Lantern projection. Motion pictures in education. Radio in education. Visual education. |