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/.
Here is a photo of the "prototype" for one of the most modern types of missile weapons today - that is, the so-called "Katyusha". It is on display in the royal palace "Deoksugung" in Seoul. The only thing about this prototype that may puzzle us a bit is that the "improved" version shown in this photo was built in Korea in 1448, while its inventor, a certain Choe Museon, lived several centuries earlier during the Goryeo Dynasty. So now it becomes clear where the Russians got the idea for their Katyusha, and what kind of weapon frightened the horses of the Polish hussars during the medieval wars against the Mongols.