TY - GEN AU - Ronald Colle C2 - NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD DA - 2019-08-06 DO - https://doi.org/10.6028/NIST.IR.8254 LA - en PB - NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD PY - 2019 TI - Ampoules for Radioactivity Standard Reference Materials ER -