ProQuest Dissertations & Theses(PQDT) (1861-) 
ProQuest Dissertations & Theses Full-text Database － Mirror Site of CALIS Mirror Site of SJTU MirrorSite of ISTIC
Electronic Thesis/Dissertation OAI Union Catalog
Virginia Polytechnic Institute and State University Dissertatiions
Only campus IP can access to the resources, and users must set up proxy at students apartments.