1.
|
[Reston, Va.?] : U.S. Dept. of the Interior, Geological Survey.
|
2.
|
Champaign, IL (615 E. Peabody Dr., Champaign 61820-6924) : Illinois State Geological Survey, 2001.
|
3.
|
[Denver, CO] : U.S. Geological Survey, [1990?]
I 19.76: 90-18 |
|
4.
|
[Denver, CO] : U.S. Geological Survey, 1990.
I 19.76: 90-683 |
|
5.
|
Washington : U.S. G.P.O. ; Denver, CO : For sale by the U.S. Geological Survey, Information Services, 1998 [i.e. 1999]
|
6.
|
Washington, D.C. : U.S. G.P.O., 1998.
|
7.
|
Menlo Park, CA : U.S. Geological Survey ; [Denver, Colo. : Books and Open-File Reports Section, distributor, 1992]
I 19.76: 92-287 |
|
8.
|
[Denver, CO] : U.S. Dept. of the Interior, U.S. Geological Survey : [Books and Open-File Reports Section, distributor], 1993.
I 19.76: 93-219 |
|
9.
|
[Menlo Park, Calif.] : Dept. of the Interior, U.S. Geological Survey ; [Denver, Colo. : Books and Open-File Reports Section, distributor, 1994]
I 19.76: 94-141 |
|
10.
|
[Menlo Park, Calif.?] : U.S. Dept. of the Interior, U.S. Geological Survey ; [Denver, Colo. : Open-File Reports Section, distributor, 1994]
I 19.76: 94-234 |
|