ProQuest Dissertations & Theses
ProQuest Dissertations & Theses (PQDT Full-text Database of Dissertations and Theses) is a world-renowned dissertation database. It collects doctoral and master's theses from over 2,000 prestigious universities in Europe and North America, covering fields such as arts, sciences, engineering, agriculture, and medicine, and serves as an indispensable information resource for academic research.