History 270 Mathematics 228 Religion 220 Self-help 182 Criticism 171 Philosophy 169 Education 135 Self help 123 Management 119 Literature 117 Non Fiction 114 Physics 104 Selling 104 India 101 Psychology 99 History and criticism 98 English literature 96 Economics 90 Seed science 89 Hinduism 86 Self-actualization (Psychology) 83 Statistics 77 Criticism and interpretation 76 Chemistry 71 Fuzzy sets 71 Novel 68 Sociology 66 Poetry 64 Research 63 Data mining 60