TY  - BOOK
T1  - Mineral production in Illinois in 1969 /
DA  - 1971.
CY  - Urbana :
AU  - Busch, Willis L.
CN  - QE105
CN  - QE105
PB  - Illinois State Geological Survey,
PP  - Urbana :
PY  - 1971.
ID  - 9856
KW  - Mines and mineral resources
TI  - Mineral production in Illinois in 1969 /
ER  -