Studies from the Center for Research in Child Health and Development, School of Public Health, Harvard University. I. The center, the group under observation, sources of information, and studies in progress /
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| Format: | Book |
| Language: | English |
| Published: |
Washington, D.C. :
Society for Research in Child Development, National Research Council,
1939
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| Series: | Monographs of the Society for Research in Child Development ;
v. 4, nos. 1-4 |
| Subjects: |