Entries for more than 2 million doctoral dissertations and master's theses. Dissertations published from 1980 forward include 350-word abstracts written by the author. Master's theses published from 1988 forward include 150-word abstracts. More than 600,000 dissertations and theses are available in native or image PDF formats for immediate free download.

Provides fast and easy access to statistical information produced by U.S. Federal agencies, States, private organizations, and major intergovernmental organizations. PQSI brings together a massive collection of statistical data in a single easy-to-use search interface, with additional features such as descriptive abstracts, detailed indexing, full-text PDFs of source documents, tables, and downloadable spreadsheets containing table data.