Columbia subject headings:
Child abuse--Protection--United States.
Child pornography--Protection--United States.
Child prostitution--Protection--United States.
Harvard subject headings:
Child abuse--United States--Prevention
Child pornography--United States--Prevention.
Child prostitution--United States--Prevention.
Child welfare--United States
Princeton subject headings:
Child sexual abuse--Canada--Prevention.
Child sexual abuse--United States--Prevention.
Children--Crimes against--Canada.
Children--Crimes against--United States.