title: [Introduction. Session dedicated to the 50th anniversary of the Polish Medical Radiology Society (author's transl)].
mesh_terms: D049673:History, 20th Century; D011871:Radiology / Q000266:history*; D012955:Societies, Medical / Q000266:history*
vernacular_title: Słowo wstepne. Sesja poświecona 50-leciu PLTR