1.
|
[Washington] : U.S. G.P.O. ; Denver, CO : For sale by the Books and Open-File Reports Section, U.S. Geological Survey, 1988.
|
2.
|
[Reston, Va.?]: Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by the Books and Open-File Reports Section, 1988.
|
3.
|
[Reston, Va.?] : Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by the Books and Open-File Reports Section, 1988.
|
4.
|
[Reston, Va.?] : Dept. of the Interior, U.S. Geological Survey : Denver, CO : For sale by the Books and Open-File Reports Section, 1987.
|