Intellectual development of children by demographic and socioeconomic factors : United States /
|Format:||Government Document eBook|
Rockville, Md. :
U.S. Department of Health, Education, and Welfare, Public Health Service, Health Services and Mental Health Administration, National Center for Health Statistics,
|Series:||DHEW publication ;
no. (HSM) 72-1012. |
Vital and health statistics. Data from the National Health Survey ; no. 110.
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