An introduction to mental retardation /
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| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
New York :
McGraw-Hill,
[1971]
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| Subjects: |
| Physical Description: | xii, 272 p. illus. 23 cm. |
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| Bibliography: | Includes bibliographies. |
| ISBN: | 0070589038 |