1、 http://edoc.ub.uni-muenchen.de/ 2、 http://proquest.umi.com/pqdweb?RQT=306TS=1240880305clientId=61177 3、 http://web.uflib.ufl.edu/etd.html 4、 http://www.lib.uwaterloo.ca/ 5、 http://www.wpi.edu/ETD-db/ETD-search/search 6、 http://uu.diva-portal.org/smash/searchad.jsf?rvn=1 ...