<Li> Youth International Party </Li> <Li> Youth Liberation of Ann Arbor </Li> <Li> Young Communist League of Canada </Li> <Tr> <Td> Persons (show) <Ul> <Li> Adam Fletcher (activist) </Li> <Li> David J. Hanson </Li> <Li> David Joseph Henry </Li> <Li> John Caldwell Holt </Li> <Li> Alex Koroknay - Palicz </Li> <Li> Lyn Duff </Li> <Li> Mike A. Males </Li> <Li> Neil Postman </Li> <Li> Sonia Yaco </Li> </Ul> </Td> </Tr>

When did child labour stop in the industrial revolution