[75th anniversary of x-rays and x-ray photography].
D005860:Germany, West; D049672:History, 19th Century; D049673:History, 20th Century; D008843:Microfilming; D011859:Radiography / Q000266:history*; D013679:Technology, Radiologic / Q000266:history*
75 Jahre Röntgenstrahlen und Röntgenphotographie.