ProQuest Dissertations & ThesesIncludes the work of authors from over 1,000 graduate schools and universities in North America and from around the globe. The database includes citations for materials ranging from the first U.S. dissertation, accepted in 1861, to those accepted as recently as last semester. Citations for dissertations published from 1980 forward also include 350-word abstracts written by the author. Citations for master's theses from 1988 forward include 150-word abstracts. Dissertations & Theses offers UCSB users access to UC dissertations in full-text digital format starting with titles published from 1997 forward.