TY - GEN AU - Cole, Selden D AU - Achenbach, Paul R C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1963-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.8013 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1963 TI - Supplementary investigation of test procedures for heating and air conditioning ducts: ER -