TY - GEN AU - Seltzer, Stephen M C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2004-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.IR.7092A LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2004 TI - Air-kerma rate coefficients for selected photon-emitting radionuclide sources: ER -