TY - GEN AU - A Miiller C2 - Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD DA - 2006-10-01 LA - en M1 - 111 No. 5 PB - Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD PY - 2006 TI - Development of Argon Isotope Reference Standards for the U.S. Geological Survey ER -