Science Workbook Series: Understanding the Mechanisms Series 1: "Electricity Training" Series 2: "The Basics of Levers, Part 1" Series 3: "The Basics of Levers, Part 2" M.access Price: ¥500 Set of 3 books "Electricity Training" has 3-4 places with marker marks. I erased the pencil checks, but they are not completely gone. There is considerable wear and tear. "The Basics of Levers, Parts 1 & 2" have folded corners and traces of being opened, but there are no particular writings. Please consider if you understand. (Listed R8.2.13 ¥600) #Maccess #M_access #Book