While it makes me cringe to hear one of my patrons say, just go on Google and get it, I realize that Google is here to stay and people use it for various reasons. So, why not use Google to advertise your collections!?!?

Google Scholar has developed two ways for libraries to tag their holdings within Google.

1. Using Link Resolvers -For libraries that make their resources available via a link resolver, we Google now offers the option to include a link for library patrons to the library's resources as a part of the Google Scholar search results. It is possible that home grown link resolvers would work with this.

2. OCLC WorldCat -For libraries that have their holdings listed in OCLC's Open WorldCat, Google will have a link for each Google Scholar book result that leads to the Open World database where users can find the book in a local library.

There is a lot of information on this including a FAQ on Google's page:
http://scholar.google.com/scholar/libraries.html