TY - RPRT TI - Seeking excellence: An evaluation of 235 international laboratories conducting water isotope analyses by isotope-ratio and laser-absorption spectrometry AU - Leonard I. Wassenaar AU - S. Terzer-Wassmuth AU - C. Douence AU - L. Araguas-Araguas AU - P. K. Aggarwal AU - Tyler B. Coplen PY - 2018 DO - 10.1002/rcm.8052 UR - https://pubs.usgs.gov/publication/70195559 ID - 70195559 ER -