Source: https://books.google.com/books?id=RncDAAAAYAAJ OCRed text: https://books.google.com/books?printsec=frontcover&id=RncDAAAAYAAJ&output=text Alternative digitisations: https://books.google.com/books?id=ddUMAAAAIAAJ http://stabikat.de/DB=1/XMLPRS=N/PPN?PPN=666166048