Epstein, Harolyn Selma2017-11-012017-11-0119611961b14704936https://hdl.handle.net/2144/24401Thesis (Ed.M.)--Boston Universityen-USBased on investigation of the BU Libraries' staff, this work is free of known copyright restrictions.Social studiesAn analysis of principles of world understanding utilized in sixth grade social studies textbooksThesis/Dissertation