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History family Becker : Becker in Daun and Hillesheim | https://d-nb.info/gnd/121-040384 | 2003 | |
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Eighteenth-Century Becker families in Western Lancaster County, Pennsylvania | Andrews, George W. | 1999 | |
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Das Haus Becker in Mörzheim | Tatge, Willi | 1954 | |
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Hauensteiner Sippen | Naab, Karl |