Library classification

A library classification is a system of organization by which library resources are arranged according to subject.
It is a implication of the Third law of Library &amp; Information Science, which was given by Indian library innovator Dr. S R Ranganathan.
Types.
There are many standard systems of library classification in use, and many more have been proposed over the years. However, in general, classification systems can be divided into three types depending on how they are used: