E. Donald McKay III ... [and others] ; 51st Midwest Friends of the Pleistocene Field Trip, an ISGS centennial field trip, May 13-15, 2005 ; sponsored by Illinois State Geological Survey
Date
[2005]
Series
Illinois State Geological Survey open file series ; 2005-7
compiled by Ardith K. Hansel and W. Hilton Johnson ; contributors, Peter Clark ... [and others] ; sponsored by Illinois State Geological and Water Surveys ... [and others]
Date
1986
Series
Field guide (American Quaternary Association) ; 1986, no. 5