TY - RPRT TI - Preliminary report on the International Energy Agency mode of occurrence inter-laboratory comparison; Phase I, USGS results AU - Curtis A. Palmer AU - Allan Kolker AU - Jason C. Willett AU - Stanley J. Mroczkowski AU - Robert B. Finkelman AU - K.C. Taylor AU - F.T. Dulong AU - J. H. Bullock PY - 1999 DO - 10.3133/ofr99160 UR - https://pubs.usgs.gov/publication/ofr99160 ID - ofr99160 ER -