In academic, special, technical and research libraries, and to a large extent even in public libraries, we will find that the majority of readers approach documents on the basis of the subject. This subject approach by readers has increased due to the growth in science and technology and also to a large extent in social sciences where the author and the title of a document are important but not adequate. The contents of a document may deal with some field of knowledge. It is a prerequisite for a classifier to know what subject matter the document exactly contains. Subject section, hence, helps bring together on the documents on one and the same subject followed by those of related subjects. Suppose you are looking for a specific document on say, physics, you can find, where subject arrangement exists, documents not only on physics, but also those related to it in close proximity, i.e., chemistry. It may so happen that if a specific title wanted by you is not available, you can find another title on the subject that may very well meet your requirement. Some scholars may need everything available on their topic. Subject arrangement of documents enables you to know:

1. What documents the Library has on a specific subject; and
2. What is the quality of collection on that subject, and what are the gaps in the collection?

In our “SAMPURN DIGITAL LIBRARY” we have added a section of Subjects in which we have uploaded the link of different subject books like Science, Maths, Computer, Tourism, SST, Physical Education & so on of different authors & publisher by which every student can take help in any subject. There is a menu of all subjects by which student can choose any one subject & go directly to that subject.