Pleistocene stratigraphy of Illinois

von Willman, H. B. 1901-, Frye, John Chapman, 1912-
Urbana, Ill.: State of Illinois Dept. of Registration and Education, 1970.
Umfang/Format: 204 pages: illustrations, maps (3 fold. col. in pocket); 25 cm.

Late cenozoic geology of Mississippi Valley: southeastern Iowa to central Louisiana, June 12, 1949 to June 25, 1949; itinerary of field conference/ assembled by M.M. Leighton and H...

1949.