Survival Series 22-book set + Invention and Experiment Showdown Series 5-book set Some covers have scuffs and tears on the edges, but there are no markings inside, and the contents are generally in good condition. How about these for your child who loves reading and science during the winter break? We do not have pets or smoke, so you can use them with peace of mind. Instant purchase is OK after viewing my profile ^ ^ #Science Comics #Survival