Book number – “any device, simple or complex, systematic
or arbitrary, used to sub-arrange books within a given class
is known as a book number” (Satija, 1990: pp. 19). It can be
also understood as a collection of symbols identifying the
work itself, its authorship, embodiment, manifestation and
its physical representation. When fully and expressively
structured it may consist of the following elements:
* Author mark – denoting the author or title if the work
is anonymous
* Work mark identifying the titles by the same author or
identifying anonymous works with the same title by
denoting the secondary authorship
* Edition mark – edition of the work
* Volume mark – if the work is published in more than
one volume
* Copy mark – denoting individual copies of a work