Call numbers describe the subject of an item and are assigned to all material on the library shelves. Along with the location (which tells you in which library or collection something is housed), they tell you where to find the item on the shelf. You can also search the catalogue by call number.
The spaces in the number are part of the number - each space indicates a new line on the spine label on the item. Examples of call numbers:
Watch or print Find that Book! to understand how to use our call numbers and find what you need.