This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Gaudinsvolumediagrams. Ann Chim Phys iii The French chemist Goudin PDold Original upload log zh wp de php CommonsHelper en Gaudinsvolumediagrams Sadi Carnot bytes no Author the french chemist Goudin source Ann Chim Phys iii zh Gaudinsvolumediagrams Zt bytes no Ann Chim Phys iii the French chemist Goudin PDOLD