TY  - BOOK
AU  - Longley,A.G.
AU  - Price,P.L.
TI  - Prediction of tropospheric radio transmission loss over irregular terrain: a computer method 
PY  - 1968///
CY  - Boulder, Colo .
PB  - Institute for Telecommunication Sciences
KW  - Radio
KW  - Transmitters and transmission
ER  -