Average working hours of children, working only, male, ages 7-14 (hours per week) - World, Estonia, Chile, Korea, Dem. People's Rep., Jamaica, Puerto Rico (US), Philippines, British Virgin Islands, Syrian Arab Republic
Understanding Children's Work, International Labour Organization ( ILO );
UN Children's Fund ( UNICEF ), note: Understanding Children's Work;
World Bank ( WB ), note: Understanding Children's Work
