TY - GEN AU - J H Hubbell C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2004-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.IR.7163 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2004 TI - Experimentally measured total x-ray attenuation coefficients extracted from previously unprocessed documents held by the NIST photon and charged particle data center. II.: ER -