Phalen, W.C.
Sulphur, pyrite, and sulphuric acid in 1913. - Washington, D.C. Government Printing Office 1914 - pp. 23-47 - Mineral Resources of the United States, calendar year 1913-Part II .
Impreso
Ingles
MINERIA
AZUFRE
PIRITA
ACIDO SULFURICO
661
Sulphur, pyrite, and sulphuric acid in 1913. - Washington, D.C. Government Printing Office 1914 - pp. 23-47 - Mineral Resources of the United States, calendar year 1913-Part II .
Impreso
Ingles
MINERIA
AZUFRE
PIRITA
ACIDO SULFURICO
661