How do I add the Google Books search box to my site?
By adding a small code snippet to your website, you can allow your users to search for books on books.google.com, directly from your website. It's easy, accurate, and free.
To add the Google Books box to your site, visit this page and follow the steps listed there.
The search box is currently only available in US English. We look forward to offering it in additional languages in the near future.