History 67 Literature 28 Prof.V.K.Vaidyan 28 History and criticism 24 Novel 22 Philosophy 21 Biography 19 Climatology 17 Agriculture 16 Life sciences 16 Biology 15 Ecology 15 Travelogue 14 Biotechnology 13 Communication 13 Criticism 13 മലയാളം; മലയാളം നോവല്‍ 13 Dissertations, Academic (Ph.D) 12 English literature 12 Euro 11 Heroes in literature 11 Malayalam; Travelogue 11 Political aspects 11 Research 11 quality 11 മലയാളം;യാത്രാവിവരണം 11 Agricultural Extension 10 Criticism and interpretation 10 Drama 10 Feminism 10