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1Published 1993“...U.S. Dept. of the Interior, U.S. Geological Survey :...”
Government Document Microform Book -
2Published 1993“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Microform Book -
3by Morin, Robert L.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1994
Government Document Microform Book -
4by Dorava, Joseph M.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1995
Government Document Microform Book -
5Published 1993“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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