Productivity indexes of soil associations in Illinois
By: prepared by J.B. Fehrenbacher ... [et al.].
Series: Circular (University of Illinois at Urbana-Champaign. Cooperative Extension Service) -- 1041; Circular (University of Illinois at Urbana-Champaign. Cooperative Extension Service) -- 1041.
Publisher: University of Illinois at Urbana-Champaign, College of Agriculture, Cooperative Extension Service
Published: 1970
Place of publication: Urbana, Ill
Language: eng
Subjects: Soil productivity
Notes: Caption title.