Chronology of the late Pleistocene vegetation changes in the lower Grand Canyon, Arizona [abs.], in Abstracts of the Fifth Biennial meeting of the American Quaternary Association
Phillips, A.M., III, 1978, Chronology of the late Pleistocene vegetation changes in the lower Grand Canyon, Arizona [abs.], in Abstracts of the Fifth Biennial meeting of the American Quaternary Association: American Quaternary Association, p. 174.
