Between collaboration and resistance : papers from the 21st Workshop on the History and Memory of National Socialist Camps and Extermination Sites - Workshop on the History and Memory of National Socialist Camps and Extermination Sites; Georg, Karoline 1980- HerausgeberIn; Meier, Verena 1988- HerausgeberIn; Oppermann, Paula Antonella 1988- HerausgeberIn; Metropol Verlag (Metropol Verlag, 2020)