Physics 12 History: theory & methods 9 History 6 Civil engineering, surveying & building 5 History: earliest times to present day 5 Educational strategies & policy 4 Language 4 Social & cultural history 4 Society & culture: general 4 Teacher training 4 The arts 4 Universities 4 Ancient history: to c 500 CE 3 Early modern history: c 1450/1500 to c 1700 3 Education 3 European history 3 History of the Americas 3 Legal history 3 Literary studies: general 3 Modern history to 20th century: c 1700 to c 1900 3 Organization & management of education 3 Philosophy 3 Social research & statistics 3 Teaching staff 3 20th century history: c 1900 to c 2000 2 Artificial intelligence 2 Biography: historical, political & military 2 Biology, life sciences 2 Christian institutions & organizations 2 Classical history / classical civilisation 2