[Prepared in cooperation with Children's Bureau, Education Office, and Public Health Service.]
Notes:
[Prepared in cooperation with Children's Bureau, Education Office, and Public Health Service.] * For Sale by Superintendent of Documents. Paper, 5c. single copy (35c. per 100, $3.25 per 1,000).
Availability:
* For Sale by Superintendent of Documents. Paper, 5c. single copy (35c. per 100, $3.25 per 1,000).