title: [Biphasic roentgenogram as a method of study of lung function].
mesh_terms: D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D013902:Radiography, Thoracic
keywords: LUNGS/radiography
vernacular_title: Dvukhfaznaia rentgenogramma; metod issledovaniia funktsii legkikh.