title: [Dr. Wacław Olszak--the Polish Mayor of Karwina].
mesh_terms: D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D009787:Occupational Medicine; D011044:Poland; D014857:Warfare
vernacular_title: Dr Wacław Olszak - polski burmistrz Karwiny