Crop rotation and soil fertility
By: by W.L. Powers and C.V. Ruzek.
Contributors: Ruzek, C. V. 1887-; Oregon Agricultural College. Experiment Station.
Series: Station circular / Oregon Agricultural College, Experiment Station -- 44.; Station circular (Oregon Agricultural College. Experiment Station) -- 44.
Publisher: Oregon Agricultural College, Experiment Station
Published: 1923
Place of publication: [Corvallis, Or.]
Language: eng
Number of pages: 12
Subjects: Crop rotation -- Oregon.; Soil fertility -- Oregon.
Notes: Cover title.