Study shows changes in the location of feed grain and wheat acres if our goal was to produce the total national requirement of feed grain and wheat at the minimum national cost.
Whittlesey, Norman; Heady, Earl O.; and Mayer, Leo V.
"Making Agriculture More Efficient,"
Iowa Farm Science: Vol. 19
, Article 3.
Available at: https://lib.dr.iastate.edu/farmscience/vol19/iss11/3