Puls, Robert W. (Robert William), 1950-
[Washington, DC] : U.S. Environmental Protection Agency, Office of Research and Development, Office of Solid Waste and Emergency Response, [1996]
1996
Zimmerman, Marc James, 1947-
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, Co. : Information Services [distributor], 2005.
2005