I'm not sure where I got this, but I do remember studying another edition in one of my college anthologies, which I've also kept. I haven't decided if I will keep or release this copy since it is paperback and it seems to be pretty easy to coime by. I havent seen it anywhere else, but 20 million copies available means there is a pretty good chance that I will be able to find it again. That's 400,000 per state. Pretty good odds. i am marking it as TBR for now, but I will change the status later to reflect what I've decided. I know if I find a hardbound copy, I won't be so interested in this one.