11 books
Corn in the Great Plains Area, Relation of Cultural Methods to Production (Classic Reprint)
Winter Wheat in the Great Plains Area: Relation of Cultural Methods to Production (Classic Reprint)
Crop Production in the Great Plains Area: Relation of Cultural Methods to Yields (Classic Reprint)
A Study of Cultivation Methods and Crop Rotations for the Great Plains Area (Classic Reprint)
The Relations Between Crop Yields and Precipitation in the Great Plains Area (Classic Reprint)
Oats in the Great Plains Area: Relation of Cultural Methods to Production (Classic Reprint)