National Geographic Angry Birds Furious Forces: The Physics at Play in the World's Most Popular Game

Acceptable: Noticeably used copy with heavy cover, spine, or page wear. Notes, underlining, highlighting, or library markings that do not obscure the text. Accessories such as CD, codes, and dust jackets not included.

Good: All pages, cover, spine are intact with minor wear. Pages may include limited notes and highlighting. Possible Ex-Library copy with Library’s labels. Shrink wrap, dust covers, or boxed set case may be missing.

Very Good: Pages are intact and not marred by notes or highlighting. The spine is undamaged.

Like New: Spine has no signs of creasing. Pages are clean and not marred by notes or folds of any kind. May contain remainder marks on outside edges.

New: A brand new book in excellent condition.