TY - GEN AU - Heinen, James M AU - Mathews, D AU - Quindry, T L AU - Leasure, William A C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1972-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.TN.737 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1972 TI - Interior: ER -