TY - GEN AU - Ehrlich, Margarete AU - Soares, Christopher G C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1976-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.76-1117 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1976 TI - Exposure spectra from NBS vertical-beam ⁶⁰Co gamma-ray source: ER -