Sound & related vibrations; Physics 12 Biochemistry 10 Novel 9 Biochemistry-- Biology 7 History 7 നോവല്‍ 7 English fiction 5 Medical laws and legislation 5 Biology 4 Detective and mystery stories, English 4 English drama 4 Research 4 Crystallography 3 Economics 3 Environmental monitoring 3 Geographic information systems 3 History and criticism 3 Image processing 3 Knowledge, Theory of 3 Remote sensing 3 Water pollution-- Aquatic ecology 3 methods 3 Age distribution (Demography) 2 Aging 2 Biodiversity conservation 2 Brain 2 Criticism and interpretation 2 DOMESTIC MIGRATION; 2 Diagnosis 2 Earth science 2