John G. Zwick
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Magdalena Müller
1838-1898
1838-1898
Georg August Zwick
1863-1911
1863-1911
Magdalena Schaub
1867-1929
1867-1929
John George Zwick
1897-1983
1897-1983
Barbara M. Ullrich
1900-1986
1900-1986