WebRef.org

Physical Sciences Social Sciences Acoustics - a glossary of over 980 terms related to acoustics. Chemistry - a glossary of nearly 1400 terms related to chemistry. Electronics - a glossary of over 300 terms related to electronics. Environment - a glossary of nearly 1900 terms related to the environment… www.webref.org and the art social ...

Mineralogy Database

Complete, up-to-date, mineral database containing 4,714 mineral species descriptions and comprehensive picture library of images. These data are linked to mineral tables by crystallography, chemical composition, physical and optical properties, Dana classification, Strunz classification, mineral name… www.webmineral.com Picture images Systems database ...