000 - Computer science, information, general works 2,460 100 - Philosophy & psychology 822 200 - Religion 622 300 - Social sciences 9,114 400 - Language 473 500 - Natural sciences and mathematics 181 600 - Technology (Applied sciences) 556 700 - The arts 1,262 800 - Literature (Belles-lettres) and rhetoric 5,909 900 - History & geography 2,712