Why Illinois produces only half a crop
By: by Cyril G. Hopkins
Series: Circular / University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station -- no. 193; Circular (University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station) -- no. 193
Publisher: University of Illinois Agricultural Experiment Station
Published: 1917
Place of publication: Urbana, Ill
Language: eng
Number of pages: 16
Subjects: Crop yields; Agricultural productivity
Notes: Cover title.

"An address delivered before the Illinois State Farmers' Institute at Steator, Feb. 21, 1917."