TY  - RPRT
TI  - Radio spectrum utilization in aerospace communication systems.
AU  - Clarke, J. M.
AU  - Otero, R. J.
AU  - Wanbaugh, W. C.
PY  - 1969
UR  - https://ntrs.nasa.gov/citations/19690064513
ID  - 19690064513
ER  -