1.
|
Hoboken, NJ : Blackwell Pub., 2010.
|
2.
|
Washington, DC : U.S. GPO ; Denver, CO : USGS Information Services [distributor], 2001.
|
3.
|
Washington : U.S. G.P.O. ; Denver, CO : For sale by U.S. Geological Survey, Information Services, 2001.
|
4.
|
[Denver, Colo.] : U.S. Dept. of Interior, Geological Survey, 1990.
I 19.76: 90-416 |
|
5.
|
Washington : U.S. G.P.O. ; Denver, CO : For sale by U.S. Geological Survey, Information Services, 1996.
|
6.
|
Washington : U.S. G.P.O. : Dept. of the Interior, U.S. Geological Survey, 1995.
|
7.
|
Boulder, Colo. : Geological Society of America, c1983.
|
8.
|
Washington, U.S. Govt. Print. Off., 1973.
|
9.
|
Washington : U.S. G.P.O. ; Denver, CO : For sale by the Books and Open-File Reports Section, U.S. Geological Survey, 1988.
|
10.
|
Washington : Smithsonian Institution Press, 1980.
|