Newton, Margaret2016-03-092016-03-091920-06https://hdl.handle.net/11299/178128University of Minnesota Ph.D. dissertation. June 1920. Major: Botany. Advisor: Dr. E. C. Stakman. 1 computer file (PDF); 68 pages.enBotanyStudies in Wheat Stem Rust (Puccinia Graminis Tritici)Thesis or Dissertation