Dissertations are useful for identifying research opportunities.
Very useful for generating reading lists.
PQDT is the world's most comprehensive collection of dissertations and theses from around the world, offering millions of works from thousands of universities. Each year hundreds of thousands of works are added. Full-text coverage spans from 1743 to the present, with citation coverage dating back to 1637.
OCLC catalog of dissertations and theses available in OCLC member libraries