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Filter Total Items: 171126

The coal fields of the United States

No abstract available.
Authors
M. R. Campbell, J. A. Bownocker, F. R. Clark

The copper deposits of Michigan

The copper district of Keweenaw Point, in the northern peninsula of Michigan, is the second largest producer of copper in the world.  The output of the district since 1845 has been more than 7,500,000,000 pounds and showed a rather steady and consistent increase from the beginning of production to the end of the World War in 1918, since which there has been a marked decrease.
Authors
B.S. Butler, W. S. Burbank

The fauna of the middle Boone near Batesville, Arkansas

No abstract available.
Authors
G. H. Girty

The Mother lode system of California

No abstract available.
Authors
Adolph Knopf

The Titanotheres of ancient Wyoming, Dakota, and Nebraska

No abstract available.
Authors
Henry Fairfield Osborn

Upper Colorado River and its utilization

This report presents, in form for ready reference, the available data pertaining to the present and future utilization of the surface waters of the upper Colorado River Basin, above the Green River and includes information relating to topography, climate, evaporation, water supply, transmountain diversions, storage, irrigation and agriculture, and water power as they existed in 1927.
Authors
Robert Follansbee

Water-laid volcanic rocks of early Upper Cretaceous age in southwestern Arkansas, southeastern Oklahoma, and northeastern Texas

No abstract available.
Authors
C. S. Ross, H. D. Miser, L. W. Stephenson

Physico-chemical factors controlling magmatic differentiation and vein formation

No abstract available. 
Authors
C. S. Ross