International System of UnitsSave
Bibliography of links, citations and online publications of the SI, the modern metric system of measurement, a language universally used in science, that has become the dominant language of international commerce and trade. http://physics.nist.gov/cuu/Units/bib...
USGS Toxics ProgramSave
Toxic substances hydrology program bibliography database providing scientific information on the behavior of toxic substances in the nation's hydrologic environments. http://toxics.usgs.gov/bib/