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Resume of work of the nonmetals division :calendar year 1936

Annual report of the nonmetals division, fiscal year 1937

Flotation and agglomerate concentration of nonmetallic minerals

Annual report of the nonmetals division :fiscal year 1938

Annual report of the nonmetals division, fiscal year 1939

Annual report of the nonmetals division, fiscal year 1940

Report of the nonmetals division, fiscal year 1941

Published Year

• 1930-1939 (5)
• 1940-1949 (2)

Subject

• Nonmetallic minerals (7) *
• Nonmetals (6)
• Flotation (1)

Author

• Ralston, Oliver C. (7) *
• Stern, A. George. (2)
• Conley, John E. (1)

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