Via MerlinMann/43Folders, a smart fusion of the newfangled and the oldfangled.
If you can figure out (or ask your librarian) what kind of online database/interface your local library uses, you can configure this bookmarklet for your web browser.
Then from the Amazon page, instead of buying a book unseen for $25 or $30 (plus shipping), you can click the bookmarklet to search your library's database. (And depending on your system, you can have the book sent to your local branch for checkout.)
I need to try this out.