@book{bhlitem29161, title = {Observations et Mémoires sur la Physique, sur l'Histoire Naturelle et sur les Arts et Métiers, etc }, volume = {Tome 20}, copyright = {Public domain. The BHL considers that this work is no longer under copyright protection.}, url = {https://www.biodiversitylibrary.org/item/29161}, note = {https://www.biodiversitylibrary.org/bibliography/6349}, publisher = {Paris, }, author = {}, year = {1782}, pages = {518}, }