Dissertations, Academic (Ph.D) 2,197 Biochemistry 395 Microbiology 345 Enzymes 260 Criticism and interpretation 248 Thesis (Ph.D)-Chemistry 233 Physiology 225 Thesis (Ph.D)-Malayalam literature 167 Dissertations, Academic(Ph.D) 165 Thesis (Ph.D)-Physics 161 Thesis (Ph.D)-English literature 156 Kerala 150 Pharmacology and Toxicology 149 Thesis (Ph.D)-Hindi literature 136 Thesis (Ph.D)-Education 130 Dissertations, Academic (Ph.D.) 127 Thesis (Ph.D)-Commerce 120 Thesis (Ph.D)-Economics 119 Genetics 111 Cell Biology-- Cytology 110 Nutrition 110 Biology 109 Pathology 108 Thesis (Ph.D)-Botany 105 Proteins 98 Hormones 95 Enzymology 91 Academic writing 87 Developmental Biology-- Reproduction-- Growth 86 Insects (Entomology) 84