Rowell, Leonard D.2017-11-012017-11-0119571957b1469072xhttps://hdl.handle.net/2144/24567Thesis (Ed.M.)--Boston Universityen-USBased on investigation of the BU Libraries' staff, this work is free of known copyright restrictions.New HampshireA survey of audio-visual aids in the state of New HampshireThesis/Dissertation