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1
Mineral resources of Alaska : report on progress of investigations in 1908, by Alfred H. Brooks and others. [U.S. Geological Survey Bulletin 379.]
Published 1909Online Access
Government Document Electronic eBook -
2
Mineral resources of Alaska : report on progress of investigations in 1909. By Alfred H. Brooks and others. [Bulletin 442]
Published 1910Online Access
Government Document Electronic eBook