Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Beware: Used books may be older printings for this book!

I ordered 3 used copies of this book rated "New and Good" because the new ones are hard to come. I hear it is a fantastic book. All 3 received were an older printing and not the one pictured here. I'm not sure what changes were made to the book between printings but wish I would have received what I thought I was getting.