Dissertations, Academic (Ph.D) 158 History 80 Malayalam literature 78 Economics 64 Philosophy 58 Agronomy 55 Women management-- Women empowerment 51 Education 44 Malayalam literature - History and criticism 43 Poetry 37 Novel 36 Agriculture 34 Criticism 33 Criticism and interpretation 33 Encyclopedias and dictionaries 33 Agricultural chemistry 32 Baalasaahithyam 31 India 31 Short stories, Malayalam 31 Malayalam fiction 30 Malayalam poetry 30 Kerala 28 Plant Biotechnology 28 Agricultural Entomology 27 Hindi 24 Soil Science and Agricultural Chemistry 24 Management 22 Biochemistry 21 Literature 21 Soil Science 21