So when you sold your book back, we didn't know if it was going to be used again or not. Because of our space limitations, we have to start returning books after the 4th week of the semester to make room for the next semester's books. So it's out with the old, in with the new. Don't wait until your final exam to read Homer's Iliad . In the text department we've got you covered for your coursebooks, but the main floor is a cornucopia of treasures.
Lets see . . .
It's the year 2000. I just finished Introduction to Geophysical Fluid Dynamics by Cushman and Roisin. Of course teachers are going to want to get a new edition sometimes, but you can't blame them for that. No, we're nice people and we wouldn't do that. Lots of publishers send complimentary desk copies to profs to compel them to use that book in class.