Kappert, A [A new method for functional study of the venous system of the lower extremities. Its use in diagnosis and supervision of treatment]. [electronic resource] - Praxis Nov 1966 - 1291-6 p. digital Publication Type: Journal Article ISSN: 0369-8394 Subjects--Topical Terms: HumansPlethysmographyThrombophlebitis--complicationsVaricose Veins--diagnosis