Sheet Metal Fabrication Development and Material Calculation: From Thick Plates to Angle Calculations and Bending By Toshio Shigeyama There are no issues with reading the book, but as shown in the second image, there is some deterioration and staining on the cover. There are no issues with reading the book. This item has been stored and inspected by a non-professional. Please purchase only if you are not concerned about these factors.