S. A. Wilson R. R. Carlson L. A. Bradley J. Cornell C. A. Gent W.D. Goss H. Groenboer Joseph Haffty A.W. Haubert A.H. Love J.M. McDade R.F. Moore L.D. Riley Barry Moring D.A. Singer N.J. Page C.A. Carlson 1985 application/pdf 10.3133/ofr85442 en U.S. Geological Survey, Analyses for platinum group elements in samples from podiform chromite deposits, California and Oregon reports