Essentials in large food production
By: by Cyril G. Hopkins
Series: Circular / University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station -- no. 197; Circular (University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station) -- no. 197
Publisher: University of Illinois Agricultural Experiment Station
Published: 1917
Place of publication: Urbana, Ill
Language: eng
Subjects: Agricultural productivity
Notes: Caption title.