Armstrong Research and Demonstration Farm
Crops and Soils
The importance of soil as a resource to the world is reflected in 2015 being named as the International Year of Soils by the 68th General Assembly of the United Nations.
Fenton, Thomas and Miller, Gerald
Farm Progress Reports: Vol. 2015
, Article 30.
Available at: http://lib.dr.iastate.edu/farmprogressreports/vol2015/iss1/30