TY  - BOOK
T1  - Mineral production in Illinois in 1961 /
DA  - 1962.
CY  - Urbana :
AU  - Busch, Willis L.
CN  - QE105
CN  - QE105
PB  - Illinois State Geological Survey,
PP  - Urbana :
PY  - 1962.
N1  - At head of title: State of Illinois, Department of Registration and Education.
ID  - 20593
KW  - Mines and mineral resources
TI  - Mineral production in Illinois in 1961 /
ER  -