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Subjects: (Frederick Adolph),; 1773-1861; 1793-1851; 1801-1849; 1809-1884; 1810-1889; Cactaceae; Correspondence; Echinocactus; Ehrenberg, Carl August,; Engelmann, George,; fl. 1830-1866; Graf zu,; Kunze, Gustav,; Letters; Mammillaria (Cactus); Salm-Reifferscheidt, Joseph,; Sencke, Ferdinand,; Wislizenus, F. A</div>
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Sencke, Ferdinand,</div>
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