On 22.05.2013 16:45 Bryan Baldus wrote: > On Wednesday, May 22, 2013 8:01 AM, Joel Marchesoni wrote: >> I like the idea of a master ISBN (one number to rule them all? >> Sorry, too easy) but I think failing that I'd stick with the [...] > As far as I know, there is not > "such a thing like a "main" or "master" ISBN" [1]. The idea was to have a part for humans (title, author, year) to get an idea about the book (even if it is not as well known as Platos Republic) and some sort of identifier that makes it easy to get more info about the book (the full record). This should still be possible though as I see more clearly after your responses not in a strict sense. Thanks for sharing your thoughts -Michael p.s.: By the way, I had an additional use case in mind. I have the idea to mirror my personal printed book collection in the file system with a folder for every shelf with subfolders for every book, named similarly as outlined in this thread and then put everything I can get about my books into these folders: MARC-XML record, cover image, scanned/OCRed table of content where available... The idea is that a simple file search/grep would be enough to find stuff. Perhaps a bit odd but I am fond of usable low tech solutions ;-)