Dissertations, Academic (Ph.D) 2,089 Research 1,246 Research methodology 1,002 Social sciences 545 Operations research 514 Research Methodology 466 Methodology 443 Education 377 Marketing research 370 History 318 Psychology 261 Criticism and interpretation 251 Social Sciences 237 Agriculture 235 Philosophy 235 Thesis (Ph.D)-Chemistry 229 Management 228 Research activities 217 India 212 Qualitative research 199 Sociology 177 Economics 176 Kerala 169 Thesis (Ph.D)-Malayalam literature 167 Dissertations, Academic(Ph.D) 165 Thesis (Ph.D)-English literature 156 Religion 153 Thesis (Ph.D)-Physics 152 Thesis (Ph.D)-Hindi literature 137 Dissertations, Academic (Ph.D.) 126