Macroeconomics & related topics 385 Literature 262 Poetics 185 Optics 142 Poetics Sanskrit 140 Literature Sanskrit 138 Mathematical optimization 109 History and criticism 104 Islam--Education--research--related topics 94 Fiber optics 81 Nonlinear optics 81 Optical communications 81 Mathematics 80 Physics 79 Poetry 75 Rhetoric Sanskrit 61 English poetry 60 Public health & related topics 59 Light & paraphotic phenomena (Optics); Physics 58 Dissertations, Academic (Ph.D) 54 Lasers 52 Photonics 52 Developmental Biology-- Reproduction-- Growth 51 History 48 Criticism 47 Sanskrit poetry 47 Poetics Hindi 46 Poetry Study; English Literature 43 Chemistry 40 Literature Hindi 39