-
1Published 1986“...U.S. Dept. of the Interior, Geological Survey,...”
Government Document Conference Proceeding Microform Book -
2Published 1988“...U.S. Dept. of the Interior, Geological Survey :...”
Government Document Conference Proceeding Microform Book -
3Published 1989“...U.S. Dept. of the Interior, Geological Survey ;...”
Government Document Conference Proceeding Microform Book -
4Published 1990“...U.S. Dept. of the Interior, Geological Survey,...”
Government Document Conference Proceeding Microform Book