000 - Computer science, information, general works 2,569 100 - Philosophy & psychology 855 200 - Religion 634 300 - Social sciences 9,354 400 - Language 520 500 - Natural sciences and mathematics 182 600 - Technology (Applied sciences) 609 700 - The arts 1,278 800 - Literature (Belles-lettres) and rhetoric 6,173 900 - History & geography 2,807