Glaciation of the Grays Lake, Illinois, quadrangle
By: by William E. Powers and George E. Ekblaw
Contributors: Ekblaw, George E. (George Elbert), 1895-1972, joint author
Series: Illinois State Geological Survey. Circular -- no. 63; Circular (Illinois State Geological Survey) -- no. 63.
Published: 1940
Place of publication: Urbana
Language: eng
Number of pages: 1335
Subjects: Glaciology; Geology
Notes: "Reprinted from the Bulletin, Geological Society of America, vol. 51, pp. 1329-1335, 1940."