TY  - BOOK
AU  - Sousa,Louis J.
AU  - 
ED  - United States.
TI  - The U.S. copper industry: problems, issues and outlook 
U1  - US 338.4767330973 23rd ed.
PY  - 1981///
CY  - Washington
PB  - U.S. Dept. of the interior.
KW  - Copper industry and trade
KW  - United States
N1  - "October 1981."
ER  -