All references sets are on the 2nd floor of the Sanford/Lake Mary library.
Call numbers are used to group library items including books, DVDs, VHS, and audiobooks into subject categories and also provide a means to find those items.
Below are some example of call numbers from the library catalog. The collection the item is housed in is sometimes located at the beginning of the call number
(e.g. Ref = reference collection, Media = media collection, Oversize = oversized collection).
Take a look at the video How to Read a Library of Congress Call Number for a more thorough explanation.