Atomic and Nuclear physics 187 Dissertations, Academic (Ph.D) 98 Physics 72 Atoms 64 Religion 53 Chemistry 45 History 45 Molecular spectroscopy; Nuclear structure; Atomic and Nuclear physics 41 Atomic spectroscopy 36 Atomic structure 36 Thesis (Ph.D)-Hindi literature 32 Criticism and interpretation 30 മലയാളം; മലയാളം നോവല്‍ 30 Atomic physics 29 Literature 29 Molecular spectroscopy 23 Nuclear physics 23 Atomic theory 20 Quantum theory 20 Thesis (Ph.D)-Malayalam literature 20 Philosophy 19 Atom 18 Atomic Structure 16 Molecules 15 Atomic Physics 14 Literature Malayalam 13 ATOMIC ENERGY 12 Poetry 12 atoms 12 Atomic spectra 11