Copper, a Materials Survey, by A. D. McMahon
Copper
The U.S. Zinc Industry
Copper Sulfate in August 1959
The U.S. Zinc Industry
Information Circular 8222-8231
Information Circular 8622-8630
Copper - a Materials Survey
The United States Zinc Industry
Sulfur Resources and Production in Texas, Louisiana, Missouri, Oklahoma, Arkansas, Kansas, and Mississippi