000 - Computer science, information, general works 18.851 100 - Philosophy & psychology 9.541 200 - Religion 2.385 300 - Social sciences 61.155 400 - Language 4.683 500 - Natural sciences and mathematics 28.674 600 - Technology (Applied sciences) 75.248 700 - The arts 3.176 800 - Literature (Belles-lettres) and rhetoric 21.366 900 - History & geography 8.109