Science Comic Survival Series I purchased these new and used them, but I no longer need them, so I am selling them. - Survival in the Human Body 1 & 3 - Survival in the Insect World 1 & 2 These are the four books shown in the photos. No individual sales. There are folds on the book covers. Two book covers have been reinforced with tape. Please check the photos. Since these are used items, there are some scratches and stains. Please understand that these are items stored at home before purchasing. Please refrain from purchasing if you are sensitive to imperfections. Study Manga