Could you hop over to this website here please? [link] see where it says "Wish List"? That's a list of books I'm working on collecting and can't until some kind soul lists them on that site.
Now the site works very simple, you join "it's FREE", you list books "along with other things like CDs and DVDs" on your profile "Book Shelf" that you no longer want and swap them with other swappers for stuff you do want".
It's that simple and no I am not plugging their site. ???...Hmm, well I guess technically I am a little, but not for their sake, for mine. You see I want those books very bad and haven't the budget so I found this site [link] that has solved half my problem now I just need to wait until someone with the Books I want lists them and then my friend I'll be a happy camper.