TY  - RPRT
TI  - Service range for air-to-ground communications at frequencies above 50 mc 
AU  - Kirby, R S
AU  - Herstreit, J W
AU  - Norton, K A
PY  - 1951
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CRPL 6-3
DO  - 10.6028/NBS.CRPL.6-3
ER  -