Invertebrates-- Zoology 22 Literature 21 Statute 20 History 13 Kerala 13 Literature Malayalam 12 Fisheries-- Fishing 11 Law and legislation 11 Algae- Phycology 10 Aquatic ecology-- Fresh water ecology-- Pond ecology-- Limnology 10 Arthropod-- Invertebrate Zoology 10 Criticism and interpretation 10 Marine biology-- Biological oceanography, Marine Science 10 Aquatic biology, organisms, plankton, freshwater biology 9 Hindi short stories-- Hindi literature 9 Law 9 Mollusca & molluscoidea-- Zoology, Malacology 9 Cell Biology-- Cytology 8 Fisheries - economics-- management-- industries-- products-- technology-India 7 Fishes-Museum collections exhibits 7 Handbooks, manuals etc 7 Jurisprudence 7 Legislation 7 Medicine 7 Parasites-- Parasitology 7 Bryozoans, Foraminiferids, moss animals - Zoology 6 Fisheries - economics-- management-- industries-- products-- technology-- fishing policy-- comm. fishing 6 Fisheries- India 6 Fishes Ichthyology 6 Protozoa 6