title: American Lung Association/Canadian Lung Association/American Thoracic Society/Canadian Thoracic Society/Congress of Lung Association Staff; Washington, D.C./May 18-21/1980. Abstracts.
mesh_terms: D002170:Canada; D003226:Congresses as Topic; D006801:Humans; D012137:Respiratory System; D012955:Societies, Medical; D014481:United States