1.
|
[Reston, Va.?] : The Survey, 1996.
|
2.
|
[Reston, VA] : U.S. Geological Survey, [1990]
I 19.76: 90-622 |
|
3.
|
[Reston, Va.] : The Survey, 1995.
I 19.76: 95-580 |
|
4.
|
[Denver, Colo.] : The Survey : [Books and Open-File Reports Section, distributor], 1991.
I 19.76: 91-124 |
|
5.
|
[Denver, Colo.] : U.S. Dept. of the Interior, U.S. Geological Survey : [Books and Open-File Reports Section, distributor], 1992.
I 19.76: 92-613 |
|
6.
|
Denver, Colo. : The Survey : [Books and Open-File Reports Section, distributor], 1992.
I 19.76: 92-423 |
|
7.
|
[Denver, CO] : U.S. Dept. of the Interior, Geological Survey, [1990]
I 19.76: 90-221 |
|
8.
|
[Denver, CO] : U.S. Dept. of the Interior, Geological Survey : [Books and Open-File Report Section, distributor, [1990]
I 19.76: 90-33 |
|
9.
|
[Denver, CO] : U.S. Geological Survey, 1990.
I 19.76: 90-646 |
|
10.
|
[Denver, CO] : U.S. Geological Survey, [1990]
I 19.76: 90-405 |
|