Lately off shore "international" or "print on demand" book copiers have been dumping books into the market place. These books have color copies of original covers ( in the ads) and under inspection I find the following: Weak non-stitched spines, poor paper quality (laser paper) Black and White reproductions (poor quality scans or photocopy) pictures that are difficult to see details, This make it impossible to read because your seeing three pages of text or pictures - or worse, no ability to put on a projector for educational purposes or loss of eye sight assistance. Trimming errors up to a 1/8 inch or more and duplication's or missing sections. ABE Books technical support said because of their volume they could not tell me if the book I was buying was the genuine or these sham books. If you don't have a policy - get one! I will not waste my time returning books after I have done your quality control.