*If a class number is not listed, that bookmay be listed under another class. I.E. - MATH-1124 and MATH-2024 use the same book, but it may only be listed under one.

1. Searching by class number is good when you don't know the isbn number, however the books there may be older editions.
   
   
2. Searching by ISBN number is a sure fire way to make sure that you get EXACTLY the right book.
   
   
3. Class number searches may also return necessary supplementary documents (like workbooks) for a class.