Year book for 1916;
administrative report and economic geological papers.
Illinois State Geological Survey Bulletin No. 36
APA Citation
Illinois State Geological Survey. (1920). Year book for 1916: administrative report and economic geological papers. Urbana.
MLA Citation
Illinois State Geological Survey. Year Book for 1916: Administrative Report And Economic Geological Papers. Urbana, 1920.
Warning: These citations may not always be complete (especially for serials).