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[Washington] : U.S. Dept. of the Interior, Bureau of Land Management, 1977.
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[Washington] : U.S. Dept. of the Interior, Bureau of Land Management ; U.S. Dept. of Agriculture, U.S. Forest Service; 1977.
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3.
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[Washington] : U.S. Dept. of the Interior, Bureau of Land Management, 1977.
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4.
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Denver : U.S. Dept. of the Interior, Bureau of Land Management, 1975.
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5.
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Denver : U.S. Dept. of the Interior, Bureau of Land Management, 1974.
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6.
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[Washington] : U.S. Dept. of the Interior, Bureau of Land Management ; Denver, 1977.
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