Briggs, N. D., and Westgate, J. A., 1978, Fission-track age of tephra marker beds in Beringia [abs.]: in Biennial meeting of the American Quaternary Association, 5, Edmonton, Alta., Canada, Sept. 2-4, 1978, Program and Abstracts - American Quaternary Association, p. 190.
Citation Updated: 2004-12-29 01:14:50