1.
|
[Reston, VA] : Dept. of the Interior, U.S. Geological Survey, 1990.
I 19.76: 90-327 |
|
2.
|
Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey, 1998.
I 19.76: 98-773 |
|
3.
|
Denver, Colo. : U.S. Geological Survey : Branch of Information Services [distributor], 1998.
I 19.76: 98-613 |
|
4.
|
Denver, Colo. : U.S. Geological Survey ; Books and Open-File Reports Section [distributor], 1995.
I 19.76: 95-675- |
|
5.
|
[Reston, VA] : U.S. Dept. of the Interior, Geological Survey, 1990.
I 19.76: 90-254 |
|
6.
|
Menlo Park, Calif. : U.S. Dept. of the Interior, U.S. Geological Survey, 2000.
I 19.76: 00-219 |
|
7.
|
[Menlo Park, CA] : U.S. Geological Survey, [1993]
I 19.76: 93-397-A |
|
8.
|
[Reston, Va.?] : U.S. Dept. of the Interior, U.S. Geological Survey, 1999.
I 19.76: 99-515 |
|
9.
|
[Menlo Park, CA] : U.S. Dept. of the Interior, U.S. Geological Survey, 1997.
I 19.76: 97-705 |
|