Dissertations, Academic (Ph.D) 2,197 Criticism and interpretation 246 Thesis (Ph.D)-Chemistry 233 Thesis (Ph.D)-Malayalam literature 167 Dissertations, Academic(Ph.D) 165 Thesis (Ph.D)-Physics 160 Thesis (Ph.D)-English literature 156 Kerala 150 Thesis (Ph.D)-Hindi literature 136 Thesis (Ph.D)-Education 130 Dissertations, Academic (Ph.D.) 127 Thesis (Ph.D)-Commerce 119 Thesis (Ph.D)-Economics 119 Thesis (Ph.D)-Botany 105 Thesis (Ph.D)-Biochemistry 83 Dissertation, academic (Ph.D.) 73 Thesis (Ph.D)-Zoology 66 Fiction 64 Thesis (Ph.D)-Social sciences 54 Poetry 53 Thesis (Ph.D)-Mathematics 48 Dissertation, Academic (Ph.D.) 40 Dissertation, Academic (Ph.D) 37 Thesis (Ph.D)-Gandhian studies 36 Malayalam poetry 34 Medicinal plants 34 Polymers 34 Synthesis 31 Thesis (Ph.D)-Environmental science 31 Thesis (Ph.D)-Statistics 28