000 - Computer science, information, general works 269 100 - Philosophy & psychology 142 200 - Religion 93 300 - Social sciences 1,568 400 - Language 402 500 - Natural sciences and mathematics 559 600 - Technology (Applied sciences) 1,551 700 - The arts 139 800 - Literature (Belles-lettres) and rhetoric 615 900 - History & geography 246