000 - Computer science, information & general works 2,314 100 - Philosophy & psychology 2,397 200 - Religion 1,566 300 - Social sciences 18,498 400 - Language 391 500 - Science 1,671 600 - Technology 7,182 700 - Arts & recreation 3,333 800 - Literature 2,309 900 - History & geography 1,987