Dissertations, Academic (Ph.D) 2.196 History 2.177 Philosophy 1.116 Economics 873 Literature 650 History and criticism 642 Social Sciences 634 India 623 English literature 546 Criticism and interpretation 517 Religion 500 Mathematics 419 Education 382 Language 339 Politics and government 321 Management 318 English poetry 314 Economic development 313 Sociology 312 Arts 294 Law 271 Criticism 270 Women 270 English language 269 Social conditions 265 Human rights 263 Physics 257 Science 255 Political science 243 Thesis (Ph.D)-Chemistry 233