TY - GEN AU - E H Eisenhower AU - E H Eisenhower C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1991-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.SP.812 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1991 TI - Criteria for the operation of Federall-owned secondary calibration laboratories (ionizing radiation): ER -