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2. Cambrian and Precambrian rocks of the Groom district, Nevada, southern Great Basin
3. Changes in nomenclature of upper Precambrian to lower Paleozoic(?) formations in the Natick quadrangle, eastern Massachusetts, and their tentative correlations with rocks in Rhode Island and Connecticut
4. Geology of Precambrian rocks, Idaho Springs district, Colorado
5. Geology of the Precambrian W (lower Precambrian) rocks in western Gogebic County, Michigan
6. Geology of the Precambrian W (lower Precambrian) rocks in western Gogebic County, Michigan
7. Las Animas Formation (upper Precambrian) in the subsurface of southeastern Colorado
8. The Marquette Range Supergroup in the Gogebic iron district, Michigan and Wisconsin
9. The Marquette Range Supergroup in the Gogebic iron district, Michigan and Wisconsin
10. Mineral resources of the Llano-Burnet region, Texas : with an account of the pre-Cambrian geology
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