TY  - BOOK
AU  - Towle, Stewart W.
ED  - United States.
TI  - World copper smelter sulfur balance-1988
T2  - Information circular
PY  - 1993///
CY  - Washington, D.C.
PB  - U.S. Dept. of the Interior, Bureau of Mines
KW  - Sulfur dioxide
KW  - Environmental aspects
KW  - Copper industry and trade
KW  - Smelting furnaces
ER  -