History 53 History and criticism 21 Social sciences 18 Biography 15 Philosophy 15 Computer operating system 13 Research 13 Communication 11 Criticism and interpretation 11 Lecture Notes in Mathematics 11 Mathematics 11 Religion 11 Social aspects 11 Atomic and Nuclear physics 10 Computer networks 10 English literature 10 Intellectual life 10 Anada Ranga Pillai 9 Law and legislation 9 Literature 9 Caliphate--Islamic history--Prophet Muhammed--Umar--Ali--Uthman--Islamic adminstration--Islamic politics 8 Data processing 8 Management Information Systems 8 Mass media 8 Natural language processing (Computer science) 8 Politics and government 8 Education 7 Historiography 7 Methodology 7 Women and literature 7