000 - Computer science, information & general works 45,749 100 - Philosophy & psychology 48,693 200 - Religion 48,239 300 - Social sciences 256,584 400 - Language 49,724 500 - Science 114,906 600 - Technology 147,743 700 - Arts & recreation 110,277 800 - Literature 225,735 900 - History & geography 125,789