TY - GEN AU - Brown, DJ AU - Wescott, LR AU - Wright, JW C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1959-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.TN.40-13 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1959 TI - Mean electron density variations of the quiet ionosphere no. 13::Summary of one year of data. May 1959-April 1960 ER -