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Filtering by: Date 2019 Remove constraint Date: 2019 Keyword helmholtz, hermann von, 1821-1894 Remove constraint Keyword: helmholtz, hermann von, 1821-1894 Keyword jaeger, eduard, ritter von jaxtthal, 1818-1884 Remove constraint Keyword: jaeger, eduard, ritter von jaxtthal, 1818-1884 Collection Historical Collections and Archives Remove constraint Collection: Historical Collections and Archives
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