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Huenneke, Laura Foster.
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Colorado Plateau -- Environmental conditions -- Congresses.
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Summitt, April R.
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Colorado River (Colo.-Mexico) -- Environmental conditions.
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Grace, Stephen, author.
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Colorado -- Environmental conditions -- History.
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Philpott, William.
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Colorado -- Environmental conditions.
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Davis, Wade.
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Colorado River Region (Colo.-Mexico) -- Environmental conditions.
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Staff, National Research Council.
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ENVIRONMENTAL DECLINE AND MASS EXTINCTION ACROSS THE C-T BOUNDARY -- A TIMETABLE FOR CENOMANIAN-TURONIAN MASS
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