Ludwig, Carl Edward2016-10-122016-10-1219361936b1477849x(OCoLC)07938549(OCoLC)ocm07938549https://hdl.handle.net/2144/18214Thesis (M.A.)--Boston University, 1936. This item was digitized by the Internet Archive.en-USBased on investigation of the BU Libraries' staff, this work is free of known copyright restrictionsThesis/Dissertation