History 136 Economics 61 Philosophy 58 Mathematics 56 Literature 55 Management 53 Social Sciences 52 Sociology 46 Biotechnology 43 Business environment 40 Biography 38 Pest control 38 Physics 38 Politics and government 38 Social conditions 37 Chemistry 35 Economic development 35 History and criticism 34 India 33 Dissertations, Academic (Ph.D) 30 Education 29 methods 29 Research methodology 28 Nanotechnology 27 Natural history-- India 27 Economic conditions 26 Transition metals 26 Globalization 25 Political science 25 Women 25