000 - Computer science, information, general works 137 100 - Philosophy & psychology 113 200 - Religion 90 300 - Social sciences 2,061 400 - Language 91 500 - Natural sciences and mathematics 105 600 - Technology (Applied sciences) 342 700 - The arts 439 800 - Literature (Belles-lettres) and rhetoric 88 900 - History & geography 8