O'Mahony, David.2009-03-202009-03-2019871987Source: Masters Abstracts International, Volume: 40-07, page: .9780315407305http://hdl.handle.net/10393/5199http://dx.doi.org/10.20381/ruor-10634Education, General.The use of chronological age in the development of legislation affecting young people in Canada, 1799-1985.Thesis