TY - RPRT TI - New method for the measurement of osmium isotopes applied to a New Zealand Cretaceous/Tertiary boundary shale AU - F.E. Lichte AU - S.M. Wilson AU - R.R. Brooks AU - R.D. Reeves AU - J. Holzbecher AU - D.E. Ryan PY - 1986 DO - 10.1038/322816a0 UR - https://pubs.usgs.gov/publication/70014519 ID - 70014519 ER -