1.
|
[Denver, CO] : U.S. Dept. of the Interior, Geological Survey, 1991.
I 19.76: 91-12 |
|
2.
|
[Denver, Colo.] : U.S. Dept. of the Interior, Geological Survey, 1990.
I 19.76: 90-428 |
|
3.
|
[Denver, Colo.] : U.S. Dept. of the Interior, Geological Survey : [Books and Open-File Reports Section, distributor], 1990.
I 19.76: 90-461 |
|
4.
|
Denver, CO : U.S. Dept. of the Interior, Geological Survey : [Books and Open-File Reports Section, distributor], 1990.
I 19.76: 90-464 |
|
5.
|
[Denver, CO] : U.S. Dept. of the Interior, Geological Survey : [Books and Open-File Reports Section distributor, 1991]
I 19.76: 91-387-A |
|
6.
|
Denver, CO : U.S. Dept. of the Interior, Geological Survey : [Books and Open-File Reports Section, distributor], 1991.
I 19.76: 91-378-A |
|
7.
|
[Denver, CO] : U.S. Dept. of the Interior, Geological Survey : [Books and Open-File Reports Section, distributor, 1991]
I 19.76: 91-369-A |
|
8.
|
[Denver, CO] : U.S. Geological Survey : [Books and Open-File Reports Section, distributor], 1991.
I 19.76: 91-368-A |
|
9.
|
[Denver, CO] : U.S. Dept. of the Interior, Geological Survey, 1990.
I 19.76: 90-223 |
|
10.
|
Denver, CO : U.S. Dept. of the Interior, Geological Survey : Books and Open-File Reports Section, distributor], 1990.
I 19.76: 90-4 |
|