Koppen, Walter J.2016-04-262016-04-261919-06https://hdl.handle.net/11299/179426University of Minnesota Masters thesis. June 1919. Major: Agriculture. Advisor: Professor W. G. Brierley, Professor F. W. Peck, and Professor A. G. Ruggles. 1 computer file (PDF); 56 pages.enAgricultureThe Cost of Apple Production in Thirty-five Representative Orchards in MinnesotaThesis or Dissertation