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1by Irwin, W. P. (William Porter), 1919-2012“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 1997
Government Document Conference Proceeding Microform Book -
2Published 1997“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Government Document Conference Proceeding Microform Book -
3Published 1997“...U.S. Dept. of the Interior, U.S. Geological Survey :...”
Government Document Conference Proceeding Microform Book -
4Published 1985“...U.S. Dept. of Interior, U.S. Geological Survey,...”
Government Document Conference Proceeding Microform Book -
5Published 1990“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Government Document Conference Proceeding Book -
6Published 1991“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Book -
7Published 1992“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Government Document Conference Proceeding Book -
8by Helgesen, John O.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1992
Government Document Conference Proceeding Microform Book -
9Published 1993“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Book -
10Published 1991“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Microform Book -
11Published 1991“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Microform Book -
12Published 1992“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Microform Book -
13Published 1992“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Microform Book -
14Published 1994“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Book -
15Published 1994“...U.S. Dept. of the Interior, U.S. Geological Survey :...”
Government Document Conference Proceeding Book -
16Published 1992“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Microform Book -
17Published 1995“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Book -
18Published 1994“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Microform Book -
19by Smith, Kathleen S.“...U.S. Dept. of the Interior, U.S. Geological Survey :...”
Published 1994
Government Document Conference Proceeding Microform Book -
20Published 1994“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Conference Proceeding Book