G. G. Conrad Joe Fisher David Fox C. L. Mardock G. R. McMurray R. J. O’Brien C. D. Peterson Rick Starr J. R. Woolsey H.E. Clifton 1991 <p>No abstract available.</p> application/pdf 10.3133/ofr91279 en U.S. Geological Survey Cruise report, 1990 Oregon Placer Mineral Research Cruise (A1 90WO) September 21-October 3, 1990 reports