Roughing It question

I found that not all instances, in goodreads, of a book can be found with a title search. This was true for me with Roughing It. The best search criteria seems to be the ISBN number, if you can find it. When looking to change editions from an existing edition, the pick list is incomplete. I don't know what the selection criteria is for the pick list but it is not guaranteed to contain all editions of a title. You can always delete a book from your list using the little x on the right edge of you book list.

No guarantees, I'm very new to Goodreads myself.