TY  - BOOK
AU  - Phalen,W.C.
TI  - Sulphur, pyrite, and sulphuric acid in 1915
T2  - Mineral Resources of the United States, 1915-Part II
U1  - 553.66 
PY  - 1916///
CY  - Washington, D.C.
PB  - Government Printing Office
KW  - MINERIA
KW  - AZUFRE
KW  - PIRITA
KW  - ACIDO SULFURICO
N1  - Impreso
ER  -