000 - Computer science, information, general works 2 360 100 - Philosophy & psychology 281 200 - Religion 140 300 - Social sciences 4 494 400 - Language 701 500 - Natural sciences and mathematics 3 891 600 - Technology (Applied sciences) 10 476 700 - The arts 1 405 800 - Literature (Belles-lettres) and rhetoric 939 900 - History & geography 809