000 - Computer science, information & general works 13,977 100 - Philosophy & psychology 10,385 200 - Religion 7,474 300 - Social sciences 50,057 400 - Language 5,546 500 - Science 31,096 600 - Technology 31,407 700 - Arts & recreation 6,958 800 - Literature 51,315 900 - History & geography 14,100