 Complete the following phrase:  Bojarska began her scientific career at the Institute, as the research aid to Professor Karol Pospieszalski in 19581966, director of the Research Department of History of Nazi Occupation of Poland Zakład Badania Dziejów Okupacji Hitlerowskiej w Polsce. She was traveling between Potsdam and Magdeburg, collecting data about the fate of Poles during the genocidal 