A history of instructional technology.
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| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
New York,
McGraw-Hill
[1967, c1968]
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| Subjects: |
| Physical Description: | xv, 399 p. illus., ports. 23 cm. |
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| Bibliography: | Bibliography: p. [371]-384. |