If the item shows as "Available at Main Collection," look for the call number listed below the title or near the bottom of the page, under "ITEM DETAILS." The call number is the address for an item stored on the shelf, e.g., GV943.3 C66 2017.

Note that videos and CDs are located on Level 2, and most books are on Levels 3 and 4. Look for signs in the elevator and the stairwell indicating which call numbers live on which floor.