Dissertations, Academic (Ph.D) 2,197 Literature 462 Biochemistry 398 Microbiology 343 Biography 263 Enzymes 261 Criticism and interpretation 250 Literature Malayalam 248 Thesis (Ph.D)-Chemistry 233 Physiology 226 Malayalam literature 211 Kerala 178 Thesis (Ph.D)-Malayalam literature 167 Dissertations, Academic(Ph.D) 165 Thesis (Ph.D)-Physics 161 Arts 156 Thesis (Ph.D)-English literature 156 Pharmacology and Toxicology 149 History 142 Thesis (Ph.D)-Hindi literature 136 Poetry 134 Religion 134 Thesis (Ph.D)-Education 130 Dissertations, Academic (Ph.D.) 127 Thesis (Ph.D)-Commerce 120 Thesis (Ph.D)-Economics 119 Hinduism 118 Genetics 115 Nutrition 114 Biology 110