TY - GEN AU - A H Morgan C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1959-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.TN.22 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1959 TI - Precise time synchronization of widely separated clocks.: ER -