Instructional aids, how to make and use them
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| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
Dubuque, Iowa,
W. C. Brown Co.
[1970]
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| Subjects: |
| Physical Description: | xiv, 267 p. illus. 28 cm. |
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| Bibliography: | Includes bibliographical references. |
| ISBN: | 697060403 |