TY - GEN AU - Heyl, PR C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1926-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.LCIRC.210 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1926 TI - Letter Circular 210::acoustics of motor car bodies ER -