@book{bhlitem50867, title = {Schriften der Physikalisch-Ökonomischen Gesellschaft zu Königsberg }, volume = {jahrg.19-21 (1878-1880) [Incomplete]}, copyright = {Public domain. The BHL considers that this work is no longer under copyright protection.}, url = {https://www.biodiversitylibrary.org/item/50867}, note = {https://www.biodiversitylibrary.org/bibliography/14682}, publisher = {Königsberg, In Commission bei Gräfe und Unzer, 1873-1941}, author = {Physikalisch-Ökonomische Gesellschaft zu Königsberg}, year = {1878}, pages = {968}, keywords = {Germany|Natural history|Periodicals|Prussia|}, }