Does anyone know how to search for lccn or oclcnum using the Google Book 
Search new server-side Data API?

http://code.google.com/apis/books/docs/gdata/developers_guide_protocol.html#CreatingAccount

If anyone knows how to search for lccn or oclcnum on the native 
books.google.com interface, that would probably be the same answer. But 
I can't figure out if it's possible.

The Google client-side Javascript API allows lccn and oclcnum search, so 
they've got the data... I just need to access it from the Data API.

Jonathan