@misc{Kleefeld_Johann_Gottfried_(1763-1845)_Acta, author={Kleefeld, Johann Gottfried (1763-1845) and Rathke, Martin Heinrich (1793-1861) and Skusa, August Wilhelm (1791-1856)}, howpublished={online}, language={ger}, language={lat}, title={Acta Societatis Physicae Experimentalis. T. 23, 1818-1832}, type={manuscripts}, keywords={manuscript, research, scientific papers, Naturforschende Gesellschaft in Danzig}, }