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1Published 1981“...U.S. Dept. of the Interior, Geological Survey,...”
Government Document Conference Proceeding Book -
2Published 1981“...U.S. Dept. of the Interior, Geological Survey,...”
Government Document Conference Proceeding Book -
3Published 1984“...Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Book -
4Published 1983“...U.S. Dept. of the Interior, Geological Survey ;...”
Government Document Conference Proceeding Book -
5Published 1983“...U.S. Dept. of the Interior, Geological Survey,...”
Government Document Conference Proceeding Book -
6Published 1984“...U.S. Dept. of the Interior, Geological Survey ;...”
Government Document Conference Proceeding Book -
7Published 1985“...Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Book -
8Published 1987“...Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Book -
9Published 1986“...Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Book -
10Published 1985“...Dept. of the Interior, [U.S.] Geological Survey,...”
Government Document Conference Proceeding Microform Book -
11Published 1984“...U.S. Dept. of the Interior, Geological Survey,...”
Government Document Conference Proceeding Microform Book -
12Published 1987“...Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Book -
13Published 1986“...U.S. Dept. of the Interior, Geological Survey,...”
Government Document Conference Proceeding Microform Book -
14Published 1988“...Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Book -
15Published 1986“...U.S. Dept. of the Interior, Geological Survey,...”
Government Document Conference Proceeding Microform Book -
16Published 1989“...Dept. of the Interior, U.S. Geological Survey,...”
Government Document Conference Proceeding Book -
17Published 1985“...U.S. Dept. of the Interior, Geological Survey ;...”
Government Document Conference Proceeding Microform Book -
18Published 1987“...Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Book -
19Published 1988“...Dept. of the Interior, U.S. Geological Survey :...”
Government Document Conference Proceeding Microform Book -
20Published 1989“...Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Book