TY  - BOOK
T1  - Igneous intrusive rocks in Illinois and their economic significance,
DA  - 1956.
CY  - Urbana,
AU  - Clegg, Kenneth Edward.
AU  - Bradbury, James C.,
VL  - 197
CN  - QE105
CN  - QE105
PP  - Urbana,
PY  - 1956.
ID  - 18926
KW  - Igneous rocks.
TI  - Igneous intrusive rocks in Illinois and their economic significance,
ER  -