TY - RPRT TI - U/Th dating by SHRIMP RG ion-microprobe mass spectrometry using single ion-exchange beads AU - J. L. Bischoff AU - J. Wooden AU - F. Murphy AU - Ross W. Williams PY - 2005 DO - 10.1016/j.gca.2004.09.017 UR - https://pubs.usgs.gov/publication/70028872 ID - 70028872 ER -