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glen canyon national recreation area
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View Aboriginal lithic raw material procurement in Glen Canyon and Canyonlands, southeastern Utah By Alan J. Osborn
Aboriginal lithic raw material procurement in Glen Canyon and Canyonlands, southeastern Utah
Aboriginal lithic raw material procurement in Glen Canyon and Canyonlands, southeastern Utah
By Alan J. Osborn
View Pollutant concentration estimates for the proposed Utah Tar Sand Triangle project By J. F. Bowers 
Pollutant concentration estimates for the proposed Utah Tar Sand Triangle project
By J. F. Bowers