A B C D E F G H I J-K L M N O P Q-R S T U V W-Y 0-9
close this section of the libraryVariability of wheat yields in the Great Plains(1)
View the documentVariability of wheat yields in the Great Plains / . Larson, Donald K. 1n Washington, D.C. : U.S. Dept. of Agriculture, Economic Research Service, 1966.