1
Skipp, Gary L.
1993
“...Open file report / United States Department of the Interior : geological survey ;...”1993
2
Spencer, C. W.
1984
“...Open file report / United States Department of the Interior : geological survey ;...”1984
3
Hult, M. F.
1984
“...Open file report / United States Department of the Interior : geological survey ;...”1984
4
Law, B. E.
1984
“...Open file report / United States Department of the Interior : geological survey ;...”1984