BOOK REVIEW 114 DIGITAL BOOK ARCHIVE 111 History 97 KERALA 71 DEBATE; 63 Mathematics 63 Philosophy 62 DIGITAL BOOK ARCHIVE; 60 Research 58 E-BOOK 53 Economics 49 Methodology 46 Biotechnology 45 Biochemistry 41 Management 41 POEM 40 methods 36 Mathematical models 35 Study and teaching 35 DOCTORAL DISSERTATION; 34 DOCTORAL DISSERTATIONS; 32 English language 32 Data processing 31 Ph.D THESIS; 31 Chemistry, Organic 30 Congresses 30 History and criticism 30 Psychology 30 Education 28 Motion pictures 28