The Retrospective Theses and Dissertations (RTDs) collection are digital versions of UNLV theses and dissertations previously available only in print or microfilm. This collection of over 3,100 works written by UNLV graduate students were produced between 1978-2008 and is freely available for anyone to download. For dissertations published from 2009 to the present, please visit this page: UNLV THESES, DISSERTATIONS, PROFESSIONAL PAPERS, AND CAPSTONES