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1
Environmental overview and analysis of mining effects, Yukon-Charley Rivers National Preserve, Alaska.
[Denver, Colo.?] : Denver Service Center, National Park Service, U.S. Dept. of the Interior, 1982

Government Document Book
2
Environmental overview and analysis of mining effects, Gates of the Arctic National Park and Preserve.
[Denver, Colo.] : Denver Service Center, National Park Service, United States Department of the Interior, 1983

Government Document Book
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