//-->
Long-range land retirement as a solution to the wheat surplus problem
Jagger, Craig, (1986)
Report of a tour to study some aspects of the Canadian and American wheat industries
Cook, L. J., (1985)
Distribution of the varieties and classes of wheat in the United States in 1964
Reitz, Louis Powers, (1966)
Wheat in the Eastern United States
Briggle, L. W., (1962)
Classification of Triticum Species and of Wheat Varieties Grown in the United States
Briggle, L. W., (1963)