1.
|
Cambridge, UK ; New York : Cambridge University Press, 1999.
|
2.
|
[Denver, Colo.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2001.
I 19.76: 0260 M |
|
3.
|
Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey, 1998.
I 19.76: 98-752 |
|
4.
|
[Menlo Park, CA] : U.S. Geological Survey, [1994]
I 19.76: 94-686 |
|
5.
|
Denver, CO : U.S. Dept. of the Interior, U.S. Geological Survey, 1994.
I 19.76: 95-673 |
|
6.
|
[Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 1996.
I 19.76: 96-538 |
|
7.
|
[Menlo Park, CA] : U.S. Dept. of the Interior, U.S. Geological Survey, [1998]
I 19.76: 98-44 |
|
8.
|
[Denver, CO] : U.S. Geological Survey, 1997.
I 19.76:97-285 |
|
9.
|
[Menlo Park, CA] : U.S. Dept. of the Interior, U.S. Geological Survey : [Denver, Colo. : Books and Open-File Reports Section, distributor, 1993]
I 19.76: 93-327 |
|
10.
|
Washington : U.S. G.P.O., 1998.
|