Fischer, Otis Rose2016-11-222016-11-2219391939b14733407(OCoLC)07872643(OCoLC)ocm07872643https://hdl.handle.net/2144/19412Dissertation (Ph.D.)--Boston University, 1939. 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