TY - GEN AU - Flynn, Daniel R AU - Evans, David J AU - Bartel, Thomas W C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1989-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.IR.88-3882 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1989 TI - An acoustical technique for evaluation of thermal insulation: ER -