Field Division of Education
A REPORT ON THE GEOLOGY OF DEVILS TOWER NATIONAL MONUMENT
by William L. Effinger
U.S. Department of the Interior National Park Service Field Division of Education Berkeley, California 1934
Last Modified: Sat, Feb 9 2002 10:00:00 am PDT http://www.cr.nps.gov/history/online_books/berkeley/effinger1/index.htm
.gif){kind=small}