TY - GEN AU - J W Wright C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1962-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.TN.138 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1962 TI - Vertical cross sections of the Ionosphere across the geomagnetic equator: ER -