Author
Geological Survey (U.S.)
8
Stricker, Virginia
3
Lee, Roger W.
2
Bush, Charles A.
1
Davis, Marvin E.
1
Fullerton, David S.
1
Mahon, Gary L.
1
Pennell, Jean N.
1
Pettijohn, Robert A.
1
Strickland, Donald J.
1
United States. Forest Service. Southern Region,
1
United States. National Park Service
1
Wait, Robert L. 1923-
1
Weiss, Jonathan S.
1
Williamson, Alex K.
1