Identification of Parts 

In the light of what we have described so far let us identify the various areas of description and the data elements in the following entry. The areas are shown in blocks and-elements in a block are indicated as sub units of the block by using the block number. At the bottom of the illustration a key is given to these numbers.

I. Heading. II. Body of the entry. III Physical Description area. IV. Series area. V. Note area. VI. Standard Number and Terms of Availability. VII Tracing . VIII Call Number IX. Accession      

Number. In this illustration all the nine parts are there. But in some of the parts certain elements are not present. For example in Part II of the entry there is no alternative title and no parallel title. General Material Designation and edition area, etc. are also not there. Likewise you can identify the missing elements in it. As stated already, it is not necessary that every main entry should carry all these. For some works some of the elements may not be present. The elements and the data provided depend upon the type of document we are cataloguing and the level of description we want to provide for it.