TY - GEN AU - D N Langenberg AU - B N Taylor C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1971-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.SP.343 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1971 TI - Precision measurement and fundamental constants: ER -