Why is ';Terrorism The Bottom Line'; by Yungher not for sale in the U.S.A. Or Canada?

I had to get this textbook for a class and it has a sticker in the inside cover that says: '; Pearson Education This book is not for sale or distribution in the U.S.A. or Canada'; and I was just wondering why? ThanksWhy is ';Terrorism The Bottom Line'; by Yungher not for sale in the U.S.A. Or Canada?
You can get it at Barnes and Noble.





The copy you have may be an advance copy distributed to people for examination purposes, which would make it not for sale. Publishers send these to instructors who are evaluating a textbook for their classes.