Mixture and chemical combination : and related essays / Pierre Duhem ; ed. and transl. [from the french], with an introd., by Paul NeedhamCommentary on the Principles of thermodynamics by Pierre Duhem / ed. and transl. [from the French], with an introd., by Paul NeedhamCommentary on the Principles of thermodynamics by Pierre Duhem / ed. and transl. [from the French], with an introd., by Paul NeedhamCommentary on the principles of thermodynamics by Pierre Duhem / edited and translated, with an introduction, by Paul Needham