Doraemon Science World: The Wonders of Plants and Animals Doraemon Social World: Japan's Geography and Life Doraemon Social World: Understanding Economics Doraemon Inquiry World: The Wonders of Dogs Doraemon Inquiry World: Mysteries of the Zoo Hiroshi Kishimoto's Easy-to-Understand Lessons: Math Perfect Solution Guide Shogakukan This is a set of the above 6 books. The front and back covers of "Doraemon Social World: Understanding Economics" have wrinkles, and the cover of "Math Perfect Solution Guide" has wrinkles and tears. Please refer to the photos. I believe these are not noticeable enough to interfere with reading. Please understand that these are used items stored at home before purchasing. They will be packed in the order of OPP bag → bubble wrap → envelope to prevent bending and moisture damage before shipping. They will be shipped via Yu-Packet Post. Immediate purchase is possible.