Thanks for the reference! I guess that there is nothing out about hydrogen isotopes. Best wishes, Arndt Renee Perez wrote: > Dear Arndt > > The complete reference is: > > > > Frank, Boles, Finncanon, Freman, Holba, Jordan (1997) Carbon isotopic > > composition of organic acids in oil field waters, San Joaquin Basin, CA. > > AAPG annual convention, Dallas Texas. Abstract. > > > I think the paper is coming out or is currently submited. > > Regards > > Renee -- Arndt Schimmelmann, Ph.D. Senior Scientist Department of Geological Sciences Biogeochemical Laboratories Geology 129, Indiana University 1001 East 10th Street Bloomington, IN 47405-1405 Ph (812) 855-7645 home (812) 339-3708 FAX (812) 855-7961 [log in to unmask] http://www.indiana.edu/~geosci/people/faculty/schimmelmann.html