North, Emily Lilian Amabel2014-12-152014-12-1519321932b14758179https://archive.org/details/retentioningener00northttps://hdl.handle.net/2144/10092Typewritten sheets in cover. Thesis (M.A.)--Boston University This item was digitized by the Internet Archive. Bibliography: p. 61-62.en-USBased on investigation of the BU Libraries' staff, this work is free of known copyright restrictions.Thesis/Dissertation