TY  - BOOK
AU  - William,H.B.
AU  - Frye,John Chapman
TI  - Pleistocene stratigraphy of Illinois
PY  - 1970///
CY  - Urbana,, Ill.
PB  - State of Illinois Dept. of Registration and Education
KW  - Geology, Stratigraphic
KW  - Pleistocene
KW  - Nomenclature
KW  - Illinois
N1  - Includes bibliographical references and index; Open access
ER  -