000 - Computer science, information & general works 13,931 100 - Philosophy & psychology 10,327 200 - Religion 7,471 300 - Social sciences 49,796 400 - Language 5,503 500 - Science 31,020 600 - Technology 31,281 700 - Arts & recreation 6,895 800 - Literature 51,057 900 - History & geography 14,027