Greg, We have a searchable, public database -- currently limited to C13, C14, and deuterium in atmospheric methane -- at http://deuterium.nist.gov/Index.html. Mike At 10:13 AM 6/1/98 -0400, you wrote: >Does anyone out there know of searchable database dedicated to isotopics >(stable and radiogenic) that is publicly accessible? > >Thanks >Greg W. > > 0000,0000,ffff================================================== Dr. R. Michael Verkouteren Leader, Atmospheric Chemistry Group Chemical Science & Technology Laboratory National Institute of Standards & Technology Gaithersburg, Maryland 20899 USA 301-975-3933 (telephone) 301-216-1134 (facsimile) ==================================================