Mineral resources of the United States, 1918: Part I - Metals

1921 ◽  
Author(s):  
Gerald Francis Loughlin
Keyword(s):  
United States ◽  
Mineral Resources ◽  
The United States

Mineral resources of the United States, 1914: Part II - Nonmetals

1916 ◽  
Author(s):  
Hiram Dryer McCaskey ◽  
Ernest Francis Burchard
Keyword(s):  
United States ◽  
Mineral Resources ◽  
The United States
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