United States Government Documents are indexed by:
Online catalog of U.S. government publications dating back to mid-1976. Direct links to documents on the web are provided. Many of the documents are available in the U.S. Documents Collection in Firestone
Source for accessing unclassified reports from U.S. and international government agencies. The database provides access to over two million critical citations from government departments such as NASA, the U.S. Department of Energy and the U.S. Department of Defense.
: DOE Scientific and Technical Information (1991+) >200,000 full text documents (free access) DOE-sponsored research.
The Information Bridge contains documents and citations in physics, chemistry, materials, biology, environmental sciences, energy technologies, engineering, computer and information science, renewable energy, and other topics of interest related to the Department Of Energy's mission.
Statistical Energy & Environmental Data from Open Sources