Good but imprecise description

I had already ordered the book sold by Amazon, called the announcement "International law .... (2 volumes)." Sub heard the two volumes are sold, in reality it is only a book, and not at all that I needed. I was in search of Volume 1. After a back and having contacted Momox (the seller) to know which tome he sold me and I started cheering, it was volume 1 that I was looking without pay 117 from the publisher. Be careful because the ad says 2 volumes but that is wrong whatever the seller.
On the volume 1, satisfied, very satisfied with my purchase, it contains everything I want! This is the problematization, issues, ideas and cross underlying social DI (CSR actors, justiciability, etc.). By cons, Volume 2 that I received before sending it back in my opinion is no less interesting. Because it only deals with social rights, therefore the right of migrants, law metal trades etc. It's area of ​​activity by industry. So descriptive enough. Personally, I find that the volume 1 is just perfect! It was used but it looks like it was new! I recommend!