@book{bhlitem50007, title = {Proceedings of the Delaware County Institute of Science }, volume = {v.4-5 1908-1911}, copyright = {Public domain. The BHL considers that this work is no longer under copyright protection.}, url = {https://www.biodiversitylibrary.org/item/50007}, note = {https://www.biodiversitylibrary.org/bibliography/14298}, publisher = {Media, Pa, The Institute, 1906-}, author = {Delaware County Institute of Science.}, year = {1908}, pages = {396}, keywords = {Periodicals|Science|}, }