TY - GEN AU - H L Mason AU - Iris M Lloyd C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1975-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.SP.413 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1975 TI - Special technical facilities at the National Bureau of Standards: ER -