TY  - BOOK
ED  - United States
TI  - Mineral industries of: Africa 
SN  - 0160359279
U1  - 549.6 
PY  - 1989///-1991.
CY  - Washington: 
PB  - United States Government Printing Office, 
KW  - Mineralogy
KW  - Mines and minerals resources
KW  - Africa
ER  -