TY - GEN AU - Arthur J Estin C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1970-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.SP.300v4 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1970 TI - Precision measurement and calibration ::selected NBS papers on electricity - radio frequency ER -