U.S. Geological Survey Bulletin
William R. Miller, Curtis E. Larsen, Richard F. Marvin, Francis Alexander McKeown, Karl S. Kellogg, Robert A. Ayuso, Russell L. Wheeler, Sigrid Asher-Bolinder, Vivian J. Suits, Katherine B. Krystinik, Meridee Jones-Cecil, Bonny L. Askew, John B. McHugh, Michael B. McGrath, William R. Greenwood