TY  - BOOK
AU  - Crook,A.R.
ED  - YA Pamphlet Collection (Library of Congress)
TI  - Geology of Sangamon County,
AV  - QE106.S3 C8
PY  - 1912///
CY  - Springfield, Ill.
PB  - Illinois State journal co., state printers
KW  - Geology
KW  - Illinois
KW  - Sangamon County
N1  - "Literature on Sangamon County geology": p. 24
ER  -