History 54 Education 46 India 41 Agriculture 40 Finance 40 Politics and government 39 Communication 38 Tribes 37 Industries 36 Language and literature 36 Non-governmental organizations 36 Population 36 Rural development 36 Scheduled tribes 36 Transportation 36 Untouchables 36 Wildlife management 36 Tourist trade 35 Urbanization 35 Political parties 30 Indian National Congress 19 Solid state physics; Properties of matter 14 Socialism 12 Economics 11 Encyclopaedia Of Sociology: Introduction To Sociology 11 History and criticism 11 Literature 11 Socialist parties 10 Social Sciences 9 Sociology 8