1.
|
Edinburgh : Dunedin Academic Press, 2005.
|
2.
|
Menlo Park, Calif. : U.S. Dept. of the Interior, U.S. Geological Survey, [1998]
I 19.76: 98-146 |
|
3.
|
Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey, 2000.
I 19.76: 00-377 |
|
4.
|
Denver, CO : U.S. Dept. of the Interior, U.S. Geological Survey : [Branch of Information Services, distributor], 1999.
I 19.76: 99-588 |
|
5.
|
[Reston, Va.] : U.S. Geological Survey, 1990.
I 19.76: 90-478 |
|
6.
|
Cheyenne, Wyo. : U.S. Geological Survey ; Denver, Colo. : Earth Science Information Center, Open-File Reports Section [distributor], 1993.
I 19.76: 93-476 |
|
7.
|
Washington, U.S. Govt. Print. Off., 1973.
|
8.
|
Golden, Colo. : U.S. Geological Survey, 1994.
I 19.76: 94-369 |
|
9.
|
[Reston, Va.?] : The Survey, 1996.
I 19.76: 95-818 |
|
10.
|
Denver, CO : U.S. Dept. of the Interior, Geological Survey, 1990.
I 19.76: 90-545 |
|