TY - GEN AU - Rains, T C AU - Olson, C D AU - Velapoldi, R A AU - Wicks, S A AU - Menis, O AU - Taylor, J K C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1974-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.74-439 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1974 TI - Preparation of reference materials for stationary source emission analysis ::beryllium ER -