I help maintain a website ( http://www.nzetc.org/ ) which publishes texts of reasonably broad interest (Nineteenth Century New Zealand novels, the Official New Zealand War Histories, a couple of literary journals, early New Zealand ethnography, etc). We publish to the web and as ePub (+PDF in cases where the layout or typography might be important). Currently we have MARC records that point to the web version, for internal use, but we're looking at making a MARCXML file available for download by third parties (we anticipate public libraries and perhaps school libraries). We'd like to make the MARC records as useful as possible to as many people as possible. I'm looking for specific recommendations of how to code references to ePubs in MARC for maximum compatibility with multiple cataloguing systems. [For those looking at our current ePubs, we're also working to increment the version of the standard we use to make them compatible with iTunesU.] cheers stuart -- Stuart Yeates Library Technology Services http://www.victoria.ac.nz/library/