On 15/05/13 10:33, Karen Coyle wrote: > Of course, rules are just rules, so some duplication of barcodes does > happen, especially if (usually small) publishers don't want to pay for a > new one. And the corollary: From http://nzetc.victoria.ac.nz/ I distribute >1000 ePUB files. If they all had ISBNs and I had to update a CSS file in each to make them more usable on the latest eReader, would I need to consume >1000 ISBNs to do that? At the current rate of release of eReaders, how long until this single site consumes all available ISBNs? cheers stuart -- Stuart Yeates Library Technology Services http://www.victoria.ac.nz/library/