TY - BOOK TI - Geological survey of Illinois VL - v. 2 (1866) UR - https://www.biodiversitylibrary.org/item/125068 PB - State Journal Steam Press CY - Springfield, Ill PY - 1866 N1 - Vol. 8 edited by Joshua Lindahl --- Survey conducted by the Illinois State Geologist AU - Worthen, Amos Henry, AU - Lindahl, Josua, AU - Illinois. State Geologist KW - Geology KW - Illinois KW - Paleontology ER -