org/licenses/by-sa/4.0CC BY-SA 4.0 Creative Commons Attribution-Share Alike 4.0 truetrue English Traditional Chinese p-blockmetals in the periodic table.
Calf Work.png Art of Bookbinding p193 Blocking Machine.png Art of Bookbinding p196 Bookbinder.png Art of Bookbinding p236 Wilhelm Leo.png Art of Bookbinding