1.
|
[Denver, CO] : U.S. Dept. of the Interior, Geological Survey, 1990.
I 19.76: 90-210 |
|
2.
|
[Menlo Park, CA] : U.S. Geological Survey, [1995]
I 19.76: 95-649 |
|
3.
|
Washington : U.S. G.P.O. ; Denver, CO : For sale by U.S. Geological Survey, Map Distribution, 1994.
|
4.
|
Menlo Park, CA : U.S. Geological Survey, [1993]
|
5.
|
Washington, D. C. : U. S. Govt. Print. Off., 1970.
|
6.
|
Washington, U.S. Govt. Print. Off., 1972.
|
7.
|
Washington : U.S. G.P.O., 1987.
|
8.
|
Washington : U.S. G.P.O., 1990.
|
9.
|
[Reston, VA] : U.S. Dept. of the Interior, Geological Survey ; [Denver, Colo. : Books and Open-File Reports Section, distributor, 1991]
I 19.76: 91-391 |
|
10.
|
Menlo Park, CA : U.S. Geological Survey ; [Denver, Colo. : Books and Open-File Section, distributor], 1991.
I 19.76: 91-306 |
|