Pockwinse, Florence Beth2016-08-082016-08-0819411941b14724479(OCoLC)7866861https://hdl.handle.net/2144/17596Thesis (M.S.)--Boston University, 1941. 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