Churkin, Michael, Jr., Trexler, J.H., Jr., and Carter, Claire, 1982, Graptolites discovered in the Woodchopper Volcanics, in Coonrad, W.L., ed., The United States Geological Survey in Alaska; accomplishments during 1980: U.S. Geological Survey Circular 844, p. 53-55.
This publication is part of a larger work. Please see C 844 for more information.
Geology; Paleontology