Columbia subject headings:
Child mental health services--Canada--History--20th century.
Child mental health services--Government policy--Canada--History--20th century.
Child mental health services--Government policy--United States--History--20th century.
Child mental health services--United States--History--20th century.
Harvard subject headings:
Child mental health services--Canada--History--20th century.
Child mental health services--Government policy--Canada--History--20th century.
Child mental health services--Government policy--United States--History--20th century.
Child mental health services--United States--History--20th century.
Princeton subject headings:
Child mental health services--Canada--History--20th century.
Child mental health services--Government policy--Canada--History--20th century.
Child mental health services--Government policy--United States--History--20th century.
Child mental health services--United States--History--20th century.