TY - GEN AU - James M Heinen AU - D Mathews AU - T L Quindry AU - William A Leasure 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 -