Christner, Wilma Bertha2022-07-262022-07-261955-08https://hdl.handle.net/11299/229635A Paper Presented to the Faculty of the Graduate School, University of Minnesota, A Requirement for the Degree Master of Arts (Plan B), by Wilma Bertha Christner, August 1955.en-USUniversity of Minnesota DuluthPlan Bs (project-based master's degrees)Master of ArtsMaster of Arts in Curriculum and InstructionDivision of Education and PsychologyAn Index of the Materials in Books Printed for Sight-Saving ClassesScholarly Text or Essay