Columbia subject headings:
Child care services--United States.
Early childhood education--United States.
Preschool children--Services for--United States.
Harvard subject headings:
Child care services--United States
Early childhood education--United States.
Preschool children--Services for--United States.
Princeton subject headings:
Child care services--United States.
Early childhood education--United States.
Preschool children--Services for--United States.