A comprehensive resource for research and communications in the geosciences, built on a core database aggregation of peer-reviewed journals indexed, linked, and inter-operable with GeoRef.

A NASA-funded project which maintains four bibliographic databases containing more than 4.0 million records: Astronomy and Astrophysics, Instrumentation, Physics and Geophysics, and preprints in Astronomy. The databases cover all the major journals, many minor journals, conference proceedings, several observatory reports and newsletters, many NASA reports, and PhD theses.