[Zope] Zope & Z39.50

Is there anyone that has been successful at using Zope and Python to access resources of another database (Like a Library Automation System) using the Z39.50 protocol? I haven't been able to find much of anything on this; I know Z39.50 is not widely used for general Web communication. I also wonder how hard it would be (if a solution doesn't exist) to implement this in Zope, possibly by building a Z39.50 protocol toolkit in Python and then plugging it into Zope. Eron