title: [Cezary Szczesny Traczewski (1866-1942)--an unknown investigator of X-rays].
mesh_terms: D049672:History, 19th Century; D049673:History, 20th Century; D011044:Poland; D011859:Radiography / Q000266:history*
vernacular_title: Cezary Szczesny Traczewski (1866-1942) nie znany badacz promieni Roentgena.