TY  - BOOK
AU  - Berg, Richard B.,
AU  - Masters, John M.
CN  - QE105
CN  - QE105
CY  - Champaign, Ill. :
DA  - 1994.
ID  - 159332
KW  - Geology
KW  - Geology
KW  - Tripoli (Mineral)
KW  - Tripoli (Mineral)
KW  - Hydrothermal alteration
PB  - Illinois State Geological Survey,
PP  - Champaign, Ill. :
PY  - 1994.
T1  - Geology of microcrystalline silica (Tripoli) deposits, southernmost Illinois /
TI  - Geology of microcrystalline silica (Tripoli) deposits, southernmost Illinois /
VL  - 555
ER  -