TY - GEN AU - Kari K Harper C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2018-11-01 04:11:00 DO - https://doi.org/10.6028/NIST.HB.150-8-2018 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2018 TI - NVLAP acoustical testing services: ER -