Social problems
History of Friedrich II of Prussia — Volume 07
History of Friedrich II of Prussia — Volume 08
History of Friedrich II of Prussia — Volume 09
History of Friedrich II of Prussia — Volume 10
History of Friedrich II of Prussia — Volume 11
History of Friedrich II of Prussia — Volume 12
History of Friedrich II of Prussia — Volume 13
History of Friedrich II of Prussia — Volume 14
History of Friedrich II of Prussia — Volume 15
History of Friedrich II of Prussia — Volume 16
