Multi-age grouping ; enriching the learning environment.
| Corporate Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
[Washington],
[publisher not identified] ;
[1967]
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| Subjects: |
| Physical Description: | viii, 30 pages : illustrations ; 23 cm. |
|---|---|
| Bibliography: | Bibliography: pages 23-25. |