Coping with metadata problems in book searches

I'll soon be facing the same issue and using the same workaround that findings.com did:

Whenever we can, we will supply WorldCat with an ISBN or other identifier to bring you straight to a book…but sometimes you will see a number of search results based on an author and Title. We would like this to be as seamless as possible, but the world of book publishing metadata is riddled with information gaps and geographic thorns.