000 - Computer science, information, general works 1,640 100 - Philosophy & psychology 586 200 - Religion 215 300 - Social sciences 12,075 400 - Language 1,095 500 - Natural sciences and mathematics 1,389 600 - Technology (Applied sciences) 3,695 700 - The arts 1,015 800 - Literature (Belles-lettres) and rhetoric 3,467 900 - History & geography 1,739