Let's say you were looking for the book Online Seductions: Falling in Love with Strangers on the Internet. By searching for the title "online seductions" in the library catalog, you would find the call number.

The CUI Library uses the Library of Congress system, the call number would be HQ 801 G95 1998. What does this number represent?
(move your mouse over the four parts below)

In libraries many items on the same subject will have similar call numbers in the library catalog and on the shelf. It is important to write down the entire call number in order to locate the item.