Journal Issue:
Role of Nitrogen, Phosphorus and Potassium fertilizers in continuous corn culture on Nicollet and Webster soils
Iowa Agriculture and Home Economics Experiment Station Research Bulletin: Volume 35, Issue 522
Role of Nitrogen, Phosphorus and Potassium fertilizers in continuous corn culture on Nicollet and Webster soils
Iowa Agriculture and Home Economics Experiment Station Research Bulletin: Volume 35, Issue 522