CRC Handbook of Chemistry & Physics
This link opens in a new windowAuthoritative resource consisting of tables of data and current international recommendations on nomenclature, symbols, and units related to not only the physical sciences but also biology, geology, and environmental science.
eMagRes
Covers MRI and NMR. (Previously published as Encyclopedia of Magnetic Resonance.)
Van Nostrand's Scientific Encyclopedia
This link opens in a new windowContains overviews of research in astronomy, biology, engineering, and other scientific fields.