@misc{_Correspondance_1820, address={A Génes}, howpublished={online}, year={1820}, publisher={A. Ponthenier, imprimeur-fondeur}, language={fre}, type={text}, title={Correspondance Astronomique, Géographique, Hydrographique et Statistique. Vol. IV.}, keywords={Zach, Franz, natural sciences and statistics, scholar's correspondence}, }