TY - GEN AU - Ronald Colle AU - Ryan Fitzgerald AU - Lizbeth Laureano-Perez C2 - Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD DA - 2015-07-23 DO - https://doi.org/10.6028/jres.120.011 LA - en M1 - 120 PB - Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD PY - 2015 TI - Development of an Ultra-Pure, Carrier-Free 209Po Solution Standard ER -