Every item in the library is assigned a number known as a call number from 000-999.
The call number relates to an item's topic.
Books about the same topic start with the same call number.
It's like a street address, as it directs you to the location of the item on the shelf.
Call numbers are found when you search the Library catalogue, NewCat+.
Write down the whole call number (e.g. 371.30281 COTT 2013) to find the exact item you need.
Watch our Finding a book on the shelf video below for more help with call numbers.