I bought this for my son when he was young, and I think he read it once or twice. It has been stored on my bookshelf at home. There are no major stains, tears, or writing. "Color Illustrated Guide to Understanding Air Traffic Control: Delving into the Behind-the-Scenes of Safe and Accurate Operations" Kinya Fujiishi / Air Traffic Control Association Price: ¥1000 #KinyaFujiishi #Kinya_Fujiishi #AirTrafficControlAssociation #Book #Electrical_Mechanical/Machinery