TY - GEN AU - B R Husten AU - Harold Lyons C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1948-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.CRPL.9-7 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1948 TI - Microwave frequency measurements and standards: ER -