Industries History 44 Rural development 39 Agriculture 38 Communication 37 Population 37 Transportation 37 Education 36 Finance 36 Language and literature 36 Non-governmental organizations 36 Politics and government 36 Scheduled tribes 36 Tribes 36 Untouchables 36 Wildlife management 36 Tourist trade 35 Urbanization 35 India 19 Industrial policy 12 Economic policy 10 Economics 8 Management 6 Economic conditions 5 Business 4 Kerala 4 Policy 4 Social aspects 4 Technological innovations 4 Business enterprises 3