Source: https://books.google.com/books?id=PtcMAAAAIAAJ OCRed text: https://books.google.com/books?id=PtcMAAAAIAAJ&pg=PP1&focus=viewport&output=text Alternative digitisations: https://archive.org/details/astatisticalacc14huntgoog https://books.google.com/books?id=lI4BAAAAQAAJ https://books.google.com/books?id=qJs5AQAAIAAJ https://books.google.com/books?id=tclCAAAAYAAJ http://stabikat.de/DB=1/XMLPRS=N/PPN?PPN=666173710