Matches in Library of Congress for { ?s ?p Child labor reforms and the National Child Labor Committee -- Progressive reform and child labor in the Pennsylvania glass industry -- Glass house owners and the politics of glass -- The Pittsburgh glass workers and the glass bottle union -- School law and compulsory education in Pennsylvania -- Child labor laws in Pennsylvania.. }
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- 2009014285 description "Child labor reforms and the National Child Labor Committee -- Progressive reform and child labor in the Pennsylvania glass industry -- Glass house owners and the politics of glass -- The Pittsburgh glass workers and the glass bottle union -- School law and compulsory education in Pennsylvania -- Child labor laws in Pennsylvania.".
- 2009014285 tableOfContents "Child labor reforms and the National Child Labor Committee -- Progressive reform and child labor in the Pennsylvania glass industry -- Glass house owners and the politics of glass -- The Pittsburgh glass workers and the glass bottle union -- School law and compulsory education in Pennsylvania -- Child labor laws in Pennsylvania.".