Blue links lead to the fully translated html versions of the page, purple links lead to pages whose start pages (as well as introductions and tables of contents at least) are already set up, green links lead to extern sites, grey means that no file is available yet).
/Notes in this color and between two / are from the operator of the German mirror site and translator/.
Img.530
Examples of illustration P9(d) from my monograph [1/4] (and also illustration O9(d) from my monograph [1/3]) shown in two different states, viz: (top) - before tampering, while (bottom) already after tampering.
