1991 First Edition Kingfisher Science Encyclopedia Complete Set of 10 Hardcovers. This item is in pre-owned condition, there is very slight wear from normal use and reading, there is no writing on any of the pages, no pages are torn or folded over, and there is minimal damage (ie., folds, bends or surface scratches) if any to the hard covers if any, these books are very clean. Please see photos for the best representation of this item's condition.