Volcanoes: What They are and What They Teach, by John Wesley Judd 67873 [Author: John Wesley Judd] [Link: https://www.gutenberg.org/6/7/8/7/67873] [Files: 67873-0.txt; 67873-h.htm]
Thanks to Tom Cosmas compiled from materials made availbe at The Internet Archive and placed in the Public Domain. Regards, Al
