Population Education 43 History 43 Agriculture 41 Finance 38 Industries 37 Scheduled tribes 37 Tribes 37 Communication 36 Language and literature 36 Non-governmental organizations 36 Politics and government 36 Rural development 36 Tourist trade 36 Transportation 36 Untouchables 36 Urbanization 36 Wildlife management 36 Demography 27 India 22 Economics 18 Sociology 11 Economic development 10 Capital 9 Labour 8 Population policy 8 Poverty 8 Environment 7 Development 6 Ecology 6