Search for paper scores in the Auburn University Libraries catalog.
All scores are shelved on the 3rd floor of the RBD library and may be checked out.
Complete Works are publications containing all of the works by a composer.
Edited by experts in the field and containing the latest scholarship, they are often referred to as the 'urtext' version. These are almost always shelved in the M3 section.
The best way to find these editions is to browse the shelves.