The first two years ; a study of twenty-five babies /
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| Format: | Book |
| Language: | English |
| Published: |
Minneapolis :
The University of Minnesota press,
[1931-]33]
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| Subjects: |
| Physical Description: | 3 volumes : frontispiece, plates, tables (1 folded) diagrams, forms. |
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| Bibliography: | Bibliography at end of each volume. |