No need to comment if you wish to purchase. Purchased at a used bookstore. The cover has a plastic coating. I suspect it was a library book. There are slight corner creases and some minor paper discoloration from age visible along the top edge, but overall it's in good condition. Please refrain from purchasing if you are overly concerned about condition, as this is an old, used book. Peter M. Senge The Necessary Revolution: How individuals and organizations are working together to create a sustainable world.