000 - Computer science, information & general works 25,855 100 - Philosophy & psychology 8,397 200 - Religion 1,878 300 - Social sciences 100,180 400 - Language 32,123 500 - Science 44,513 600 - Technology 86,700 700 - Arts & recreation 8,626 800 - Literature 39,295 900 - History & geography 20,986