@misc{Kleefeld_Johann_Gottfried_(1763-1845)_Meteorologische, author={Kleefeld, Johann Gottfried (1763-1845)}, howpublished={online}, language={ger}, type={manuscripts}, title={Meteorologische Beobachtungen 1817-1821}, keywords={manuscript, meteorology, GdaƄsk (Poland ; city)}, }