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<http://id.loc.gov/resources/works/21105557> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://id.loc.gov/ontologies/bibframe/Work> .
<http://id.loc.gov/resources/works/21105557> <http://id.loc.gov/ontologies/bflc/aap> "Piccolomini, Marion M., Southwestern Pennsylvania's coal region" .
<http://id.loc.gov/authorities/subjects/sh2009120495> <http://id.loc.gov/ontologies/bflc/subjectOf> <http://id.loc.gov/resources/works/5807084> .
<http://id.loc.gov/resources/works/5807084> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://id.loc.gov/ontologies/bibframe/Work> .
<http://id.loc.gov/resources/works/5807084> <http://id.loc.gov/ontologies/bflc/aap> "Stevens, Thaddeus, 1792-1868 Thaddeus Stevens papers" .
<http://id.loc.gov/authorities/subjects/sh2009120495> <http://id.loc.gov/ontologies/bflc/subjectOf> <http://id.loc.gov/resources/works/6805869> .
<http://id.loc.gov/resources/works/6805869> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://id.loc.gov/ontologies/bibframe/Work> .
<http://id.loc.gov/resources/works/6805869> <http://id.loc.gov/ontologies/bflc/aap> "[Blanchard, D. E.] A concise history of the anthracite coal industry of Pennsylvania" .
<http://id.loc.gov/authorities/subjects/sh2009120495> <http://id.loc.gov/ontologies/bflc/subjectOf> <http://id.loc.gov/resources/works/14449141> .
<http://id.loc.gov/resources/works/14449141> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://id.loc.gov/ontologies/bibframe/Work> .
<http://id.loc.gov/resources/works/14449141> <http://id.loc.gov/ontologies/bflc/aap> "[Coal mines and mining, Pennsylvania (miscellaneous material on this subject)]" .
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<http://id.loc.gov/resources/works/9147400> <http://id.loc.gov/ontologies/bflc/aap> "[Silver Hill coal and iron estate] The coal fields of McKean County, Pennsylvania" .
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<http://id.loc.gov/resources/works/829284> <http://id.loc.gov/ontologies/bflc/aap> "A.W. Martin Associates Relationship between underground mine water pools and subsidence in the northeastern Pennsylvania anthracite fields" .
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<http://id.loc.gov/resources/works/6974291> <http://id.loc.gov/ontologies/bflc/aap> "Ash, Simon Harry, 1889- Core drilling at shaft sites of proposed mine-water drainage tunnel" .
<http://id.loc.gov/authorities/subjects/sh2009120495> <http://id.loc.gov/ontologies/bflc/subjectOf> <http://id.loc.gov/resources/works/8367675> .
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<http://id.loc.gov/resources/works/8367675> <http://id.loc.gov/ontologies/bflc/aap> "Ash, Simon Harry, 1889- Inundated anthracite reserves" .
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<http://id.loc.gov/resources/works/7273607> <http://id.loc.gov/ontologies/bflc/aap> "Eagle Hill mutual coal company Report" .
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<http://id.loc.gov/resources/works/791581> <http://id.loc.gov/ontologies/bflc/aap> "Schenck, George H. K. The economic importance of the coal industry to Pennsylvania" .
<http://id.loc.gov/authorities/subjects/sh2009120495> <http://id.loc.gov/ontologies/bflc/subjectOf> <http://id.loc.gov/resources/works/6797463> .
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<http://id.loc.gov/resources/works/703208> <http://id.loc.gov/ontologies/bflc/aap> "Susquehanna Coal and Coal Mountain Company The charter and by-laws of the Susquehanna Coal and Coal Mountain Company with reports on their coal lands, together with a synopsis and supplementary remarks" .
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<http://id.loc.gov/resources/works/9238183> <http://id.loc.gov/ontologies/bflc/aap> "United States. Public health service. Anthraco-silicosis among hard coal miners" .
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