Non Fiction 545 Study 127 Self-help 114 Essays 72 History 72 Reference 39 Philosophy 20 Psychology 17 Indian English literature--Indian Non--fiction 14 Non-fiction 14 Science & Nature 14 Non fiction 13 Politics & Current Affairs 13 Education 11 Study Guides 10 Non-Fiction 7 Sociology 7 Speeches 7 Biography 4 Forensic Science 4 Malayalam non fiction 4 Study Guides & Test Prep 4 Life Sketches 3 non fiction 3 Law 2 United States 2 Adventure, Classics, Non Fiction, Travel, Biography, History, Cultural, Africa, Science, Historical Fiction, Medieval, Geography, Religion, Islam 1 Anthology 1 Authors, Indic -- 20th century -- Biography 1 Autobiographical reminiscences of the Indic author 1