Kennedy, B. Mack & van Soest, Matthijs C. A systematic regional trend in helium isotopes across the northernbasin and range province, Western North America, article, May 1, 2006; (https://digital.library.unt.edu/ark:/67531/metadc891102/m1/1/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .

Next page