000 - Computer science, information & general works 1,815 100 - Philosophy & psychology 1,239 200 - Religion 3,876 300 - Social sciences 4,835 400 - Language 841 500 - Science 1,385 600 - Technology 6,841 700 - Arts & recreation 2,487 800 - Literature 4,988 900 - History & geography 1,320