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Leibowitz, F.; Sorensen, C.: Perspectives on the Pennsylvania newspaper project at the University of Pittsburgh (1986)
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Harriman, R.: ¬The news in review : the United States newspaper program (1993)
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Kuhn, T.J.: Classifying newspapers Using Dewey Decimal Classification (1999)
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Geus, D. de; Roosmalen, M. van: Practical experiences ...: automated classification control (1991)
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Copeland, A.; Hamburger, S.; Hamilton, J.; Robinson, K.J.: Cataloging and digitizing ephemera : one team's experience with Pennsylvania German broadsides and fraktur (2006)
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