Dow, Loren Woodbury,2017-04-202017-04-2019461946b14727912(OCoLC)7868543https://hdl.handle.net/2144/21446Thesis (Ph.D.)--Boston University, 1946. 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