Avery, Keith Tuttle2017-01-122017-01-1219391939b14764568(OCoLC)07908574(OCoLC)ocm07908574https://hdl.handle.net/2144/19966Thesis (M.A.)--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