TY - GEN AU - J R Noyce C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1981-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.TN.1137 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1981 TI - Evaluation of methods for the assay of radium-228 in water: ER -