TY  - RPRT
TI  - Analysis of ionospheric vertical soundings for electron density profile data. II, Extrapolation of observed electron density profiles above hmax F2 
AU  - Wright, J W
PY  - 1959
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 19
DO  - 10.6028/NBS.TN.19
ER  -