Van Wagenen, Margaret2016-03-032016-03-0319431943b1472148x7865884(Alma)99185855690001161https://hdl.handle.net/2144/14722Thesis (M.S.)--Boston University, 1943. 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