History 77 Library & information sciences 8 19th century 6 18th century 5 Economics, finance, business & management 5 Regional & national history 5 Schleswig-Holstein 5 Universities 5 Biotechnology 4 Computer programming / software development 4 Literary theory 4 Science 4 The environment 4 Archives 3 Bankhouse M. M. Warburg & Co 3 Culture 3 Foundation 3 Language 3 Politics 3 Theology 3 17th century 2 Administration 2 Agricultural reforms 2 Ancient history: to c 500 CE 2 Antisemitism 2 Buildings, structures, etc 2 Foreign relations 2 History of specific companies / corporate history 2 Information theory 2 Inventory 2