TY - GEN AU - Lamperti, Paul J AU - O'Brien, Michelle C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2001-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.SP.250-58 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2001 TI - Calibration of x-ray and gamma-ray measuring instruments: ER -