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williams fork roadless area (colo.)
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View Mineral investigation of the Vasquez Peak Wilderness Study Area and St. Louis Peak and Williams Fork roadless areas, Clear Creek, Grand, and Summit counties, Colorado By Alan M. Bielski 
Mineral investigation of the Vasquez Peak Wilderness Study Area and St. Louis Peak and Williams Fork roadless areas, Clear Creek, Grand, and Summit counties, Colorado
By Alan M. Bielski