Nitrogen bacteria and legumes
Subtitle: with special reference to red clover, cowpeas, soy beans, alfalfa, and sweet clover, on Illinois soils
By: by Cyril G. Hopkins.
Series: Bulletin (University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station) -- no. 94; Bulletin (University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station) -- no. 94.
Publisher: University of Illinois Agricultural Experiment Station
Published: 1904
Place of publication: Urbana, Ill
Subjects: Nitrogen-fixing microorganisms.; Bacteria, Nitrifying