As of December 2019, includes 204, 760 dissertations. Among the dissertations received by the NDL between 1991-2000, the NDL digitized the ones whose author granted the permission. Also contains the doctoral dissertations in digital format for which degrees were conferred in or after April 2013.
Also refer to 「国内博士論文」調べ方案内 in the NDL's Research Navi for further details about using the database and more.
Updated: 12/5/2019

Can search all dissertations granted by Japanese academic institutions including those open through institutional repositories and those held by the National Diet Library.

Updated: 12/5/2019