000 - Computer science, information, general works 2 461 100 - Philosophy & psychology 320 200 - Religion 167 300 - Social sciences 5 256 400 - Language 858 500 - Natural sciences and mathematics 4 346 600 - Technology (Applied sciences) 11 665 700 - The arts 1 469 800 - Literature (Belles-lettres) and rhetoric 969 900 - History & geography 842