Economics 34 Agricultural economics 28 exports 13 imports 13 Sociology 11 Natural resources 10 Financial Economics 9 Collective bargaining 7 Dynamic Economy 7 Plant Protection 7 Trade 7 Management 6 Money 6 agricultural labourers 6 agricultural development 5 agricultural economics 5 Engineering 4 Food grains 4 agricultural survey 4 income 4 Agricultural growth 3 Agricultural productivity 3 Agriculture 3 Finance 3 Financial economics 3 Agricultural engineering 2 Climatology 2 Commerce 2 Foodgrain production 2 Meteorology 2