TY - GEN AU - Phillips, M L C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1945-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IRPL.11 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1945 TI - A nomographic method for both prediction and observation correlation of ionosphere characteristics: ER -