Dewey Decimal Classification
At SEK Library Media Center, we use the Dewey Decimal Classification system (DDC) to arrange books on similar subjects together. This classification system was invented in 1876 by Melvil Dewey. It is kept up to date and is widely used around the world in all types of libraries. Dewey organised all of the world's knowledge into ten great divisions - hence decimal. These are called the main classes. Each subject comes under one of these classes and is assigned an appropriate class number.