At the publisher's website, there are a variety of different packages available, including both on-line and print versions. For Phys 131, Volume 1 of the text will be sufficient.
This is the same text as was used in previous years for Phys 131. If you are considering buying a used text or a text from another source, be aware that you still will need to buy the online homework part. You can buy that directly from MasteringPhysics. Please also be aware that the online card by itself is rather expensive, and you may end up paying more for the combination than if you simpy purchased the standard package through the bookstore.
You will likely find a confusing array of ISBN numbers that refer to different packagings of the text with various optional components. The only required parts are the text itself and the on-line homework component.
One copy of University Physics will be on 2-hour reserve at the library. Please note that only one copy is available for all students in Physics 131. You are responsible for ensuring that you have access to the text, therefore if you plan to use the library copy you will need to plan your studying and homework well in advance.