TY - RPRT TI - Platinum-group elements AU - Michael L. Zientek AU - Patricia J. Loferski AU - Heather L. Parks AU - Ruth F. Schulte AU - Robert R. Seal PY - 2017 DO - 10.3133/pp1802n UR - https://pubs.usgs.gov/publication/pp1802N ID - pp1802N ER -