000 - Computer science, information & general works 16,148 100 - Philosophy & psychology 13,929 200 - Religion 5,657 300 - Social sciences 84,869 400 - Language 7,063 500 - Science 30,352 600 - Technology 52,515 700 - Arts & recreation 10,132 800 - Literature 32,625 900 - History & geography 23,546