Browsing Extension Series Publications by Author "Johnson, Roger G."
Now showing items 1-2 of 2
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Crop costs and returns : soybeans, pinto beans, corn and sunflowers
Johnson, Roger G.; Rice, Billy B.; Schaffner, Leroy W.; Johnson, Roger G.; Rice, Billy B.; Schaffner, Leroy W. (North Dakota State University, 1971) -
Weather and profitable machinery size
Olson, Carl E.; Johnson, Roger G.; Rice, Billy B.; Eidsvig, Douglas H.; Olson, Carl E.; Johnson, Roger G.; Rice, Billy B.; Eidsvig, Douglas H. (North Dakota State University, 1969)