1.
|
[Menlo Park, CA] : U.S. Geological Survey, 1990.
I 19.76: 90-61 |
|
2.
|
[Menlo Park, CA] : U.S. Geological Survey, [1997]
I 19.76: 97-262 |
|
3.
|
Menlo Park, CA : U.S. Geological Survey ; [Denver, Colo. : Books and Open-File Reports Section, distributor], 1992.
I 19.76: 92-361 |
|
4.
|
[Menlo Park, Calif.] : U.S. Dept. of the Interior, U.S. Geological Survey ; [Denver, Colo. : Books and Open-File Reports Section, distributor, 1994]
I 19.76: 93-551-E |
|
5.
|
[Menlo Park, CA] : U.S. Dept. of the Interior, U.S. Geological Survey, 1998.
I 19.76: 98-462 |
|
6.
|
[Denver, CO] : U.S. Geological Survey : [Books and Open-File Reports Section, distributor], 1990.
I 19.76: 90-507 |
|
7.
|
[Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [1995]
I 19.76: 95-55 |
|
8.
|
[Menlo Park, CA] : U.S. Geological Survey, [1996]
I 19.76: 96-670 |
|