sentences:  Marian Mazur
  
  Marian Mazur (Radom, December 7, 1909 – Warsaw, January 21, 1983) was a Polish scientist who specialized in electrothermics and cybernetics, and the founding father of the Polish school of cybernetics.In 1937 Mazur pioneered work on automatic telephone switchboards, and developed a working prototype just before World War II.