What is an ISBN / ISSN?

I have been asked to provide an ISBN / ISSN what is this?


ISBN (International Standard Book Number) and ISSN (International Standard Serial Number) are unique numbers which are given to most publications. If you are wish to request a book from the library, or to buy your own copy, this number will help to ensure that you have the correct item.

If you can supply the ISBN or ISSN for an item you are requesting, it will help to speed up the processing of your request.