Van Pelt and Opie Library Database A-Z List: N

Provides access to NASA's Scientific and Technical Information (STI), as well as literature from the National Advisory Committee for Aeronautics (NACA), the NASA Image Exchange (NIX), and more.

Digital Library portal for researchers in Astronomy and Physics. The ADS maintains three bibliographic databases containing more than 12.5 million records covering publications in Astronomy and Astrophysics, Physics, and the arXiv e-prints.

Provides access to historical and current government documents acquired by the National Technical Information Service (NTIS), a division of the U.S. Department of Commerce. The documents include technical documents, articles conference proceedings, dissertations and theses, and more. Comprehensive subject area coverage.