METU Theses Collection
PQDT O P E N
ProQuest Dissertation and Thesis OPEN provides the full text of open access dissertations and theses free of charge.
Networked Digital Library of Thesis and Dissertations
NDLTD is an international organization that promotes the adoption, creation, use, dissemination and preservation of electronic theses and dissertations. You may search several collections in the "Browse/Search" section. Many are freely accessible. Try the "Scirus/ETD Search" option first.