Heads of state Chefs d'État 159 HISTORY 105 Politics and government 100 History 86 Politique et gouvernement 75 BIOGRAPHY & AUTOBIOGRAPHY 64 Historical 58 Histoire 57 General 33 POLITICAL SCIENCE 27 Generals 19 Psychology 17 Biography 16 National socialism 15 Political leadership 15 Généraux 14 Leadership 14 Psychological aspects 13 Psychologie 13 Succession 12 Modern 11 Nazisme 11 Dictators 10 Politicians 10 Russia & the Former Soviet Union 10 World War, 1939-1945 10 Legal status, laws, etc 9 Political corruption 9 Reference 9