Muyres, Marvin C2021-08-042021-08-041968-07https://hdl.handle.net/11299/222671A Report Presented to the Faculty of the Graduate School, The University of Minnesota, by Marvin C. Muyres, July 1968.en-USUniversity of Minnesota DuluthMaster of ArtsMaster of Arts in EducationScholarly Text or Essay