History 169 Philosophy 78 Education 61 Politics and government 52 Agriculture 51 Literature 51 History and criticism 48 Economics 45 Biography 44 Finance 44 Rural development 44 Scheduled tribes 44 Communication 43 Mathematics 43 Novel 41 Industries 38 Population 38 Tribes 38 Non-governmental organizations 37 Urbanization 37 Language and literature 36 Transportation 36 Untouchables 36 Wildlife management 36 Criticism 35 Law and legislation 35 Psychology 35 Tourist trade 35 English literature 34 Consumer behaviour 33