TY  - BOOK
AU  - Ekblaw,George E.
AU  - Carroll,Don L.
TI  - Typical rocks and minerals in Illinois
T2  - Educational Series
PY  - 1936///
CY  - Illinois
PB  - State Geological Survey
KW  - Mineralogía
KW  - Minerales
KW  - Roca
KW  - Illinois
KW  - Libro
ER  -