NTIS (National Technical Information Service)
The National Technical Information Service (NTIS) contains descriptions of U.S. government-sponsored, science and technology research from agencies such as DOD, DOE, DOT, EPA, and NASA. It covers work in the fields of astronomy, atmospheric science, biotechnology, computers, energy, engineering, environment, etc. You'll find reports on contracts and grants, technical memoranda, technical reports, dissertations, etc. Includes abstracts.