W. C. Roentgen. Travel aspects of his life.
D005260:Female; D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011859:Radiography / Q000266:history*; D014195:Travel / Q000266:history