History 96 Dissertations, Academic (Ph.D) 82 Botany 65 India 64 Women 52 Communism 50 Economics 49 Intellectual property 46 Biotechnology 45 International agencies 45 Mathematics 45 Radiochemistry 45 Microbiology 41 Political science 40 Philosophy 39 Patent laws and legislation 38 Patents 38 Law 37 Literature 37 Law and legislation 36 Management 32 Organic chemistry 32 Agriculture 31 Biochemistry 30 Political Science 30 Research 30 Plants 29 Travel Management --Travel agency and tour operations managmenet 29 Feminism 28 Human rights 28