Matches in DBpedia 2015-10 for { ?s ?p <http://books.google.com/books?id=bGwvAAAAMAAJ&dq=district%20of%20columbia%20eight-hour%20day%201892&pg=PA47#v=onepage&q=district%20of%20columbia%20eight-hour%20day%201892&f=false> }
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