The U.S. Government publishes a lot of techical reports, manuals, etc. Be sure to explore the links below regardless of your topic!
Diabetes
Huntington's Disease
Contraceptive options
Skin cancer
Cataracts
Overuse injuries
Alzheimer's disease
Genetic counseling and testing
Toxins
Bacterial contamination in the Flint River
Calculus -- theoretical and applied concepts
Stargazing & telescopes
Unit testing (computer programming)
Provides access to the full text of more than 1,800 Elsevier electronic journals in chemistry and chemical engineering; clinical medicine; computer science; earth and planetary sciences; economics, business, and management science; engineering, energy, and technology; environmental science and technology; life sciences; materials science; mathematics; physics and astronomy; and social science; as well as indexing and abstracting for electronic journals from other publishers.