Productivity of soils in the north central region of the United States
By: agricultural experiment stations of Alaska ... [et al.]; [prepared by the North Central Regional Technical Committee 3 on Soil Surveys].
Series: North central regional research publication -- no. 166; Bulletin / University of Illinois Agricultural Experiment Station -- 710; Bulletin (University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station) -- 710.
Publisher: University of Illinois Agricultural Experiment Station
Published: 1965
Place of publication: [Urbana]
Language: eng
Number of pages: 14
Subjects: Soil productivity -- Middle West.; Soils