[posted] Posted (#71780, Burtis) !

[Roger Frank]

Direct methods, by Thomson Burtis                                      71780
   [Author: Thomson Burtis]
   [Link: https://www.gutenberg.org/7/1/7/8/71780]
   [Files: 71780-0.txt; 71780-h.htm]

Thanks to Roger Frank and Sue Clark