TY  - RPRT
TI  - Low- and very low-radiofrequency tables of ground wave parameters for the spherical earth theory : the roots of Riccati's differential equation
AU  - Johler, J Ralph
PY  - 1959
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 7
DO  - 10.6028/NBS.TN.7
ER  -