Dissertations, Academic (Ph.D) 2,197 Biochemistry 419 Microbiology 368 Physiology 280 Literature 262 Enzymes 261 Criticism and interpretation 249 Thesis (Ph.D)-Chemistry 233 Kerala 172 Thesis (Ph.D)-Malayalam literature 167 Dissertations, Academic(Ph.D) 165 Thesis (Ph.D)-Physics 162 Thesis (Ph.D)-English literature 156 Pharmacology and Toxicology 153 Malayalam literature 150 Literature Malayalam 146 Thesis (Ph.D)-Hindi literature 136 Thesis (Ph.D)-Education 130 Genetics 129 Nutrition 129 Dissertations, Academic (Ph.D.) 127 Arts 123 Thesis (Ph.D)-Commerce 120 Poetry 119 Thesis (Ph.D)-Economics 119 Biology 118 Pathology 115 Religion 112 Cell Biology-- Cytology 110 History 110