Liberalism 138 Hospitality management--Hotel industry--Food --Catering 123 Fiber optics 81 Malayalam literature 54 Malayalam literature - History and criticism 51 Optical communications 44 History 42 Dissertations, Academic (Ph.D) 41 Minerals 38 Optical fiber communication 31 Computer crimes 29 Economics 29 Internet 28 Optical fibers 27 Social Sciences 26 India 25 Computer security 24 Computer networks 23 Computer science 22 Democracy 22 Mines and mineral resources 22 Philosophy 21 Mineral nutrition 20 KERALA SAHITYA CHARITRAM 19 Mineral resources 19 Political science 18 Biotechnology 17 Cryptography 17 Economic development 16 Cyber law 15