[Dr. Carl Steffen on his 60th birthday].
D000486:Allergy and Immunology / Q000266:history; D001172:Arthritis, Rheumatoid / Q000276:immunology; D001317:Austria; D019411:Clinical Laboratory Techniques / Q000266:history; D006405:Hematology / Q000266:history; D049673:History, 20th Century
Professor Dr. Carl Steffen zum 60. Geburtstag.