Chemical principles of soil fertility
By: by Cyril G. Hopkins
Series: Circular / University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station -- no. 124; Circular (University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station) -- no. 124
Publisher: University of Illinois Agricultural Experiment Station
Published: 1908
Place of publication: Urbana, Ill
Language: eng
Number of pages: 16
Subjects: Soil fertility; Soil chemistry
Notes: Caption title.

"Address before the American Society of Agronomy at Cornell University, Ithaca, New York, July 11, 1908"--P. 1.

Includes bibliographical references.