title: [Sanitary situation in occupied Warsaw as reported by Wilhelm Hagen].
mesh_terms: D004196:Disease Outbreaks / Q000453:epidemiology; D049673:History, 20th Century; D006801:Humans; D011044:Poland; D011634:Public Health; D014857:Warfare
vernacular_title: Sytuacja sanitarna okupowanej Warszawy w sprawozdaniu Wilhelma Hagena