Should be ok, Becki.  According to the Help Center, only the title, Author, ISBN, and book type (paperback, hardback, etc) must match.  Covers and publication date do not.  It is probably a book that was originally published earlier and reissued.  As long as your book meets posting conditions, it should be fine.

Its just been republished from I can tell and they used the information from amazon rather then whats in the library of congress. Which shows it publish date for the ISBN is 1989, so its been republished several times.  Same book, same ISBN and same bindings, I would post it.

I collect a lot of older books and I have seen every different configuration of dates and copyrights.  Dell, for instance, only ever put the original copyright date...I have a book from the '70s (I can tell by jacket design and cover price) but the copyright was from the '40s, with no other date listed anywhere.  DAW, which I collect more seriously, will show the original material copyright date, as well as the date of their first release, but not nesessarily the release date for that edition...though there is a "number line" to show which printing it's from, but the ISBN will be the same.  In other words, you are almost certainly safe posting it.

That's ok. The cover picture, publishing date and # of pages don't have to match.  Just the author, title, binding and ISBN # have to match.  Otherewise most of the books on PBS would have to be posted w/o an ISBN since publishers tend to reuse ISBN's when reissuing books. 

I guess it depends on the book and how they've updated it.  ISBN's aren't regulated. Sometimes they recycle them for a completely different book. I have a couple of books that when I put the ISBN in here or Amazon it comes up a completely different book.  Publisher's don't have to use an ISBN at all.  It's just a numbering system that came out of the computer age to help retailers and publisher keep track of books. 

Here is the site to the agency in the US that assigns ISBNs. http://www.isbn.org/standards/home/index.asp

Unfortunately Mary is correct, although it is a standards and measures type of thing, no publisher is mandated to use ISBNs. The larger ones do and will often assign a new ISBN each time they do a print run. Even if the only thing that is different is a review added to the back cover. And some publishers dont change the ISBN even when they release a paperback version. Considering how little it costs to buy ISBNs in bulk, about $2 each, you would think that reusing an ISBN would never occur, but it does happen and way too often, IMO.

So by posting by ISBN, the things to watch for is the Title, Author, and Binding type. Yours meets all those requirements, so you are fine to post it.  

Becki -- with non-fiction, once you've matched the ISBN, author and book type, it's really important to make sure your book matches any descriptive info that's in the title. If the database listing had the title as "My Nonfiction Book (2nd ed)", then you could not post the first edition using that listing. Or if it were "The Guide to Visiting Huge Tourist Attractions Run by a Mouse (2007)", then you can't post the 2008 edition or the 2006 edition. Books that have this type of info in the title do tend to get republished with the same ISBN. If the book you're posting doesn't include this info in the title, then you can post either edition.