000 - Computer science, information, general works 18.861 100 - Philosophy & psychology 9.543 200 - Religion 2.386 300 - Social sciences 61.159 400 - Language 4.690 500 - Natural sciences and mathematics 28.670 600 - Technology (Applied sciences) 75.234 700 - The arts 3.185 800 - Literature (Belles-lettres) and rhetoric 21.411 900 - History & geography 8.121