The Google Book Search Dynamic Links feature allows you to create more customizable, reliable links to Google Book Search from your site. For example, this tool lets you generate "smart" links that appear only when a book is in our index, or display links that indicate to your users whether a book can be previewed on Google Book Search. The Dynamic Links feature also lets you include a thumbnail image in your link to Google Book Search. This document is intended to let you quickly add this functionality to your site.