TY - GEN AU - Seltzer, Stephen M C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2003-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.IR.7092 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2003 TI - Air-kerma-rate coefficients for selected photon-emitting radionuclide sources: ER -