Minnesota establishes official grade for certified seed potatoes A. G. Tolaas Miscellaneous papers Pages: 180 - 181
Changes in wisconsin seed potato inspection service J. G. Milward Miscellaneous papers Pages: 181 - 182
A glance at the markets Fruit and Vegetable Division, Bureau of Agricultural Economics, U. S. Dept. of Agr. Miscellaneous papers Pages: 182 - 183