title: The Fick principle and the steady state.
authors.forename: A P
authors.initials: AP
authors.lastname: Fishman
mesh_terms: D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000266:history*; D012143:Respiratory Physiological Phenomena; D014481:United States