Hirst, Helen Geraldine2016-10-122016-10-1219371937b1473851x(OCoLC)07877877(OCoLC)ocm07877877https://hdl.handle.net/2144/18104Thesis (M.A.)--Boston University, 1937. 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